Open Access. Powered by Scholars. Published by Universities.®

Social and Behavioral Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Sampling

Discipline
Institution
Publication Year
Publication
Publication Type
File Type

Articles 1 - 30 of 47

Full-Text Articles in Social and Behavioral Sciences

Practical Recommendations For Mixed Methods Sampling In Psychological Intervention Research: A Mixed Methods Case Study, Analay Perez Aug 2023

Practical Recommendations For Mixed Methods Sampling In Psychological Intervention Research: A Mixed Methods Case Study, Analay Perez

College of Education and Human Sciences: Dissertations, Theses, and Student Research

Sampling is integral to the research process and, if not appropriately addressed, can affect the meta-inferences of the mixed methods study. Sampling is also closely related to recruitment, retention, and additional methodological components. Sampling issues are magnified in social and health sciences intervention research due to the temporal placement of data collection and analysis. Limited research has examined sampling based on researchers’ rationales and decision-making across mixed methods psychological intervention research. This study explored this phenomenon to develop and refine a list of practical recommendations for sampling in mixed methods that were tested using content validity.

Using an exploratory sequential …


Comparison Of Sampling Methods For Predicting Wine Quality Based On Physicochemical Properties, Robert Burigo, Scott Frazier, Eli Kravez, Nibhrat Lohia Apr 2023

Comparison Of Sampling Methods For Predicting Wine Quality Based On Physicochemical Properties, Robert Burigo, Scott Frazier, Eli Kravez, Nibhrat Lohia

SMU Data Science Review

Using the physicochemical properties of wine to predict quality has been done in numerous studies. Given the nature of these properties, the data is inherently skewed. Previous works have focused on handful of sampling techniques to balance the data. This research compares multiple sampling techniques in predicting the target with limited data. For this purpose, an ensemble model is used to evaluate the different techniques. There was no evidence found in this research to conclude that there are specific oversampling methods that improve random forest classifier for a multi-class problem.


On The Outside Looking In: Difficulties In Obtaining The Opinions Of Muslim Religious Leaders’ Views On Domestic Violence Experienced By Married Muslim Women, Muhammed Suleman Dr Jan 2023

On The Outside Looking In: Difficulties In Obtaining The Opinions Of Muslim Religious Leaders’ Views On Domestic Violence Experienced By Married Muslim Women, Muhammed Suleman Dr

The Qualitative Report

In this paper I discuss the difficulties I faced in getting access to respondents in a qualitative study on the opinions of Muslim religious leaders on domestic violence experienced by Muslim married women. This in turn highlighted the need for me to reflect carefully on my own assumptions about my insider status and take into account how prospective participants identify me as a researcher. For the study on which I am reflecting, I chose an interpretive research paradigm which falls under the umbrella of qualitative research. This research paradigm was necessary as it places emphasis on context and nuanced meanings …


Development Of Guidelines For Collecting Transit Ridership Data, Hong Yang, Kun Xie, Sherif Ishak, Qingyu Ma, Yang Liu Feb 2022

Development Of Guidelines For Collecting Transit Ridership Data, Hong Yang, Kun Xie, Sherif Ishak, Qingyu Ma, Yang Liu

Computational Modeling & Simulation Engineering Faculty Publications

Transit ridership is a critical determinant for many transit applications such as operation optimizations and project prioritization under performance-based funding mechanisms. As a result, the quality of ridership data is of utmost importance to both transit administrative agencies and transit operators. Many transit operators in Virginia report their ridership data to the Department of Rail and Public Transportation (DRPT) and the National Transit Database (NTD). However, with no specific guidelines available to transit agencies in Virginia for collecting ridership data, the heterogeneous mixture of diverse data collection methods and technologies has often raised concerns about the consistency and quality of …


Fire Monitoring Handbook May 2020

Fire Monitoring Handbook

United States National Park Service: Publications

Fire is a powerful and enduring force that has had, and will continue to have, a profound influence on National Park Service (NPS) lands. Fire management decisions within the National Park Service require information on fire behavior and on the effects of fire on park resources. With good reason, the public is holding park management increasingly accountable, especially in the area of fire management. Federal and state agencies are instituting progressively more stringent guidelines for burning, monitoring, and evaluation. The impetus behind these guidelines and the purpose of this handbook are to ensure that management objectives are being met, to …


Toward A Meta-Framework For Conducting Mixed Methods Representation Analyses To Optimize Meta-Inferences, Julie A. Corrigan, Anthony J. Onwuegbuzie Mar 2020

Toward A Meta-Framework For Conducting Mixed Methods Representation Analyses To Optimize Meta-Inferences, Julie A. Corrigan, Anthony J. Onwuegbuzie

The Qualitative Report

The purpose of this article is to propose a meta-framework for conducting what we term mixed methods representation analyses (MMRA). We define MMRA as the appropriate selection of sampling design (i.e., the sampling frame [random] or sampling boundary [purposive]; sampling combination, comprising the mixing dimension [partial/fully], time dimension [concurrent/sequential], emphasis dimension [dominant/equal status], and relationship among/between samples [identical/parallel/nested/multilevel]; sample size; and number of sampling units [e.g., of people, cases, words, texts, observations, events, incidents, activities, experiences, or any other object of study]) in order to obtain representation and concomitantly meta-inferences consistent with the study’s generalization goal(s). Thus, the goal of …


Determining Shelving Accuracy Via Sampling In A Community College Library, John P. Delooper, Devika Gonsalves Jan 2020

Determining Shelving Accuracy Via Sampling In A Community College Library, John P. Delooper, Devika Gonsalves

Publications and Research

During the Fall 2017 semester, staff at the Hudson County Community College (HCCC), Library began to notice that many books listed as available in the catalog were often not being found on the shelves when patrons attempted to retrieve them. This situation puzzled library leadership because HCCC had recently conducted an inventory and removed all missing items from its holdings. To determine the cause of this discrepancy, HCCC staff decided to sample the library’s collection to determine if books were available at the expected locations. From this, the library found that a high percentage of its books were not present …


Factoring The Personal Profile System For Construct Validity: Three Analyses Under Different Standardization Assumptions, Thomas G. Henkel, James Noel Wilmoth Aug 2019

Factoring The Personal Profile System For Construct Validity: Three Analyses Under Different Standardization Assumptions, Thomas G. Henkel, James Noel Wilmoth

Tom G. Henkel

Three types of data were factor analyzed using principal components extractions with orthogonal and oblique rotations to test publisher claims for construct validity of the Personal Profile System (PPS). Behavioral descriptor data from 1,045 senior non-commissioned Air Force officers were factored as raw data, mean corrected data, and standardized z-scores (correlations). The most efficacious solution was produced with standardized z-scores generating four factors accounting for 86% of the total variance. The measure of sampling adequacy for every descriptor exceeded 0.922. The first factor was general with approximately equal loadings on each of the dominance, influencing, steadiness, and compliance dimensions. The …


Sampling Tomorrow's Lunch Today: Examining The Effect Of Sampling A Vegetable-Focused Entrée On School Lunch Participation, A Pilot Study, Lizzy Pope, Erin Roche, Caitlin B. Morgan, Jane Kolodinsky Dec 2018

Sampling Tomorrow's Lunch Today: Examining The Effect Of Sampling A Vegetable-Focused Entrée On School Lunch Participation, A Pilot Study, Lizzy Pope, Erin Roche, Caitlin B. Morgan, Jane Kolodinsky

College of Agriculture and Life Sciences Faculty Publications

School lunch programs are important pillars in the food system, as they impact children's health, local agriculture, and community food security. When offering a new lunch entrée that contains vegetables, schools must consider whether students will choose the new entrée to avoid low participation rates and decreased revenue. Previous research in marketing suggests that sampling (i.e. taste testing) can positively impact consumer choice. In terms of encouraging students to eat school lunch and particularly items that include vegetables, it is often assumed that sampling will help direct food choice to healthier items, but little research has investigated the impact of …


National Assessment Program: Sample Assessment: Civics And Citizenship Report: Years 6 And 10: 2016, Julian Fraillon, Eveline Gebhardt, Judy Nixon, Louise Oakwell, Tim Friedman, Michelle Robins, Mark Mcandrew Mar 2018

National Assessment Program: Sample Assessment: Civics And Citizenship Report: Years 6 And 10: 2016, Julian Fraillon, Eveline Gebhardt, Judy Nixon, Louise Oakwell, Tim Friedman, Michelle Robins, Mark Mcandrew

Julian Fraillon

Under the National Assessment Program, the Civics and Citizenship sample assessment is administered to a representative sample of Year 6 and Year 10 students every three years. It is conducted under the auspices of the Education Council. The National Assessment Program – Civics and Citizenship assesses students’ skills, knowledge and understandings of Australia’s system of government, civic institutions and the values which underpin Australia’s democracy. It also provides an indication of student attitudes and their engagement in civic-related activities at school and in the community. This report presents the findings of the fifth National Assessment Program – Civics and Citizenship …


Understanding Sampling And Recruitment In Social Work Dissertation Research, Rebecca G. Mirick, Ashley Davis, Stephanie P. Wladkowski Dec 2017

Understanding Sampling And Recruitment In Social Work Dissertation Research, Rebecca G. Mirick, Ashley Davis, Stephanie P. Wladkowski

Rebecca Mirick

The field of social work has increasingly focused on improving the quantity and rigor of its research. For many social work doctoral students, their first independent research experience begins with their dissertation, and yet, little is known about the factors that facilitate students’ success during this process. Sample recruitment is one step where significant and unexpected challenges can occur. As social justice is the central value of the profession, social work doctoral students may focus on research with vulnerable or marginalized populations; however, little research has been done that focuses on social work dissertations, samples used, and the process of …


Examining Water Quality Along Cozine Creek, Noah Berg, Hayden Cooksy, Gabrielle Esparza, Kyle Huizinga, Peri Muellner, Mehana Sabado-Halpern, Connor Sende Oct 2017

Examining Water Quality Along Cozine Creek, Noah Berg, Hayden Cooksy, Gabrielle Esparza, Kyle Huizinga, Peri Muellner, Mehana Sabado-Halpern, Connor Sende

Environmental Studies Student Papers

Water is an essential resource for all life. Water sustains ecological processes that are important to the survival of fish, vegetation, wetlands, and birds. It contributes to humans by providing drinking water, irrigation, and also is an inspiration for recreational, cultural, and spiritual practices. Anthropogenic activities affect water quality in various ways, and a significant portion of the human population is currently experiencing water stress. The quality of water, as well as its social and economic value, share a positive relationship. Therefore, as water quality becomes degraded by pollution, the environmental, social, and economic value also decrease. The recognition of …


General, Target, And Accessible Population: Demystifying The Concepts For Effective Sampling, Nestor Asiamah, Henry Kofi Mensah, Eric Fosu Oteng-Abayie Jun 2017

General, Target, And Accessible Population: Demystifying The Concepts For Effective Sampling, Nestor Asiamah, Henry Kofi Mensah, Eric Fosu Oteng-Abayie

The Qualitative Report

In this paper the concepts of general, target and accessible population are explained in response to misconceptions and controversies associated with them, and the fact that the relationships between them have not been explained in the context of qualitative enquiry in any formal study. These concepts are discussed in this study based on a general scenario. We basically attempt to explain the importance of specifying the general, target and accessible populations in a qualitative study when the study population is large. The study depicts how the research goal, contexts and assumptions can dictate the content and concentration of the target …


Architectural Group Typology And Excavation Sampling Within Chunchucmil, Scott R. Hutson, Aline Magnoni, Bruce H. Dahlin Jan 2017

Architectural Group Typology And Excavation Sampling Within Chunchucmil, Scott R. Hutson, Aline Magnoni, Bruce H. Dahlin

Anthropology Faculty Publications

No abstract provided.


National Assessment Program: Sample Assessment: Civics And Citizenship Report: Years 6 And 10: 2016, Julian Fraillon, Eveline Gebhardt, Judy Nixon, Louise Ockwell, Tim Friedman, Michelle Robins, Mark Mcandrew Jan 2017

National Assessment Program: Sample Assessment: Civics And Citizenship Report: Years 6 And 10: 2016, Julian Fraillon, Eveline Gebhardt, Judy Nixon, Louise Ockwell, Tim Friedman, Michelle Robins, Mark Mcandrew

Civics and Citizenship Assessment

Under the National Assessment Program, the Civics and Citizenship sample assessment is administered to a representative sample of Year 6 and Year 10 students every three years. It is conducted under the auspices of the Education Council. The National Assessment Program – Civics and Citizenship assesses students’ skills, knowledge and understandings of Australia’s system of government, civic institutions and the values which underpin Australia’s democracy. It also provides an indication of student attitudes and their engagement in civic-related activities at school and in the community. This report presents the findings of the fifth National Assessment Program – Civics and Citizenship …


National Assessment Program : Civics And Citizenship 2013 Year 6 And Year 10 : Technical Report, Kate O'Malley, Eveline Gebhardt, Renee Chow, Martin Murphy, Wolfram Schulz, Judy Nixon, Julian Fraillon Oct 2016

National Assessment Program : Civics And Citizenship 2013 Year 6 And Year 10 : Technical Report, Kate O'Malley, Eveline Gebhardt, Renee Chow, Martin Murphy, Wolfram Schulz, Judy Nixon, Julian Fraillon

Dr Martin Murphy

In 1999, the State, Territory and Commonwealth Ministers of Education, meeting as the tenth Ministerial Council on Education, Employment, Training and Youth Affairs (MCEETYA), agreed to the National Goals for Schooling in the Twenty-first Century. Subsequently, MCEETYA agreed to report on progress toward the achievement of the National Goals on a nationally-comparable basis, via the National Assessment Program (NAP). As part of NAP, a three-yearly cycle of sample assessments in primary science, civics and citizenship and ICT was established. The three previous cycles of NAP – CC were conducted in 2004, 2007 and 2010. As a result of a 2010 …


Analyzing Different Sampling Designs (Sas), Ying Lu May 2016

Analyzing Different Sampling Designs (Sas), Ying Lu

Journal of Modern Applied Statistical Methods

Various sampling designs are reviewed within the framework of probability sampling. SAS® code to estimate means and proportions, and their standard errors, using different sampling designs are illustrated using example data sets.


Effects Of Environmental Factors On The Abundance Of Blacklegged Ticks, Jasmine L. Miller, Roger A. Lebrun, Howard S. Ginsberg Apr 2016

Effects Of Environmental Factors On The Abundance Of Blacklegged Ticks, Jasmine L. Miller, Roger A. Lebrun, Howard S. Ginsberg

Senior Honors Projects

The nymphal stage of the blacklegged tick, Ixodes scapularis, is the major vector of Lyme disease, the most common vector-borne disease in North America. Tick abundance has generally been estimated using either flag/drag samples or samples from hosts. However, the biases of these sampling methods have not been adequately studied. We compared samples using both methods from sites in Massachusetts and Wisconsin. Tick abundance was compared with variables related to weather (temperature, relative humidity, and tick adverse moisture events), vegetation (canopy cover, tree density, shrub density, ground vegetation, and leaf litter cover), and host abundance (mice, small mammals, medium …


Sampling In Qualitative Research: Insights From An Overview Of The Methods Literature, Stephen J. Gentles, Cathy Charles, Jenny Ploeg, K. Ann Mckibbon Nov 2015

Sampling In Qualitative Research: Insights From An Overview Of The Methods Literature, Stephen J. Gentles, Cathy Charles, Jenny Ploeg, K. Ann Mckibbon

The Qualitative Report

The methods literature regarding sampling in qualitative research is characterized by important inconsistencies and ambiguities, which can be problematic for students and researchers seeking a clear and coherent understanding. In this article we present insights about sampling in qualitative research derived from a systematic methods overview we conducted of the literature from three research traditions: grounded theory, phenomenology, and case study. We identified and selected influential methods literature from each tradition using a purposeful and transparent procedure, abstracted textual data using structured abstraction forms, and used a multistep approach for deriving conclusions from the data. We organize the findings from …


Whom Should We Sense In 'Social Sensing' - Analyzing Which Users Work Best For Social Media Now-Casting, Jisun An, Ingmar Weber Nov 2015

Whom Should We Sense In 'Social Sensing' - Analyzing Which Users Work Best For Social Media Now-Casting, Jisun An, Ingmar Weber

Research Collection School Of Computing and Information Systems

Given the ever increasing amount of publicly available social media data, there is growing interest in using online data to study and quantify phenomena in the offline 'real' world. As social media data can be obtained in near real-time and at low cost, it is often used for 'now-casting' indices such as levels of flu activity or unemployment. The term 'social sensing' is often used in this context to describe the idea that users act as 'sensors', publicly reporting their health status or job losses. Sensor activity during a time period is then typically aggregated in a 'one tweet, one …


A Lifetime Individual Sampling Model (Ism) For Heroin Use And Treatment Evaluation In Australia, Nagesh Shukla, Van Hoang, Marian Shahanan, Alison Ritter, Vu Lam Cao, Pascal Perez Sep 2015

A Lifetime Individual Sampling Model (Ism) For Heroin Use And Treatment Evaluation In Australia, Nagesh Shukla, Van Hoang, Marian Shahanan, Alison Ritter, Vu Lam Cao, Pascal Perez

Nagesh Shukla

Illicit drug use has created an enormous burden at societal, family and personal levels. Every year a significant amount of resources is allocated for treatment and the consequences of illicit drug use in Australia and around the world. Heroin is one of the major forms of illicit drugs that are used illegally. Several independent heroin treatment strategies or interventions exist and state-of-the-art research demonstrates their efficacy and relative cost-effectiveness. However, assessing total potential gains and burden from providing all treatment interventions or varying the mix of heroin treatments has never been attempted. Furthermore, the need to include multiple treatments, multiple …


National Assessment Program : Civics And Citizenship 2013 Year 6 And Year 10 : Technical Report, Kate O'Malley, Eveline Gebhardt, Renee Chow, Martin Murphy, Wolfram Schulz, Judy Nixon, Julian Fraillon Aug 2015

National Assessment Program : Civics And Citizenship 2013 Year 6 And Year 10 : Technical Report, Kate O'Malley, Eveline Gebhardt, Renee Chow, Martin Murphy, Wolfram Schulz, Judy Nixon, Julian Fraillon

Julian Fraillon

In 1999, the State, Territory and Commonwealth Ministers of Education, meeting as the tenth Ministerial Council on Education, Employment, Training and Youth Affairs (MCEETYA), agreed to the National Goals for Schooling in the Twenty-first Century. Subsequently, MCEETYA agreed to report on progress toward the achievement of the National Goals on a nationally-comparable basis, via the National Assessment Program (NAP). As part of NAP, a three-yearly cycle of sample assessments in primary science, civics and citizenship and ICT was established. The three previous cycles of NAP – CC were conducted in 2004, 2007 and 2010. As a result of a 2010 …


National Assessment Program : Civics And Citizenship 2013 Year 6 And Year 10 : Technical Report, Kate O'Malley, Eveline Gebhardt, Renee Chow, Martin Murphy, Wolfram Schulz, Judy Nixon, Julian Fraillon Aug 2015

National Assessment Program : Civics And Citizenship 2013 Year 6 And Year 10 : Technical Report, Kate O'Malley, Eveline Gebhardt, Renee Chow, Martin Murphy, Wolfram Schulz, Judy Nixon, Julian Fraillon

Dr Wolfram Schulz

In 1999, the State, Territory and Commonwealth Ministers of Education, meeting as the tenth Ministerial Council on Education, Employment, Training and Youth Affairs (MCEETYA), agreed to the National Goals for Schooling in the Twenty-first Century. Subsequently, MCEETYA agreed to report on progress toward the achievement of the National Goals on a nationally-comparable basis, via the National Assessment Program (NAP). As part of NAP, a three-yearly cycle of sample assessments in primary science, civics and citizenship and ICT was established. The three previous cycles of NAP – CC were conducted in 2004, 2007 and 2010. As a result of a 2010 …


Estimating The Reproducibility Of Psychological Science, Alexander A. Aarts, Et Al, Stephanie C. Lin Aug 2015

Estimating The Reproducibility Of Psychological Science, Alexander A. Aarts, Et Al, Stephanie C. Lin

Research Collection Lee Kong Chian School Of Business

Reproducibility is a defining feature of science, but the extent to which it characterizes current research is unknown. We conducted replications of 100 experimental and correlational studies published in three psychology journals using high-powered designs and original materials when available. Replication effects were half the magnitude of original effects, representing a substantial decline. Ninety-seven percent of original studies had statistically significant results. Thirty-six percent of replications had statistically significant results; 47% of original effect sizes were in the 95% confidence interval of the replication effect size; 39% of effects were subjectively rated to have replicated the original result; and if …


Social Worker's Perception Of In Home Therapy To Reduce Depression Among The Elderly, Christine A. Mettlen Jun 2015

Social Worker's Perception Of In Home Therapy To Reduce Depression Among The Elderly, Christine A. Mettlen

Electronic Theses, Projects, and Dissertations

This paper will discuss the barriers to the elderly population and how providing in home therapy could reduce depression in order to provide a better long lasting life. There are high levels of depression related to psychological problems, aging and illness. Depression can be associated with cumulative loss, restricted sense of control and declining abilities. The main problem is that elderly individuals tend to isolate so they will not seek help to address their depression. Providing guidance and support to the elderly will allow them to be able to function longer, remain independent, and extend their life.

The total number …


Estimation Of Signal Distortion Using Effective Sampling Density For Light Field-Based Free Viewpoint Video, Hooman Shidanshidi, Farzad Safaei, Wanqing Li Jan 2015

Estimation Of Signal Distortion Using Effective Sampling Density For Light Field-Based Free Viewpoint Video, Hooman Shidanshidi, Farzad Safaei, Wanqing Li

Faculty of Engineering and Information Sciences - Papers: Part A

In a light field-based free viewpoint video (LF-based FVV) system, effective sampling density (ESD) is defined as the number of rays per unit area of the scene that has been acquired and is selected in the rendering process for reconstructing an unknown ray. This paper extends the concept of ESD and shows that ESD is a tractable metric that quantifies the joint impact of the imperfections of LF acquisition and rendering. By deriving and analyzing ESD for the commonly used LF acquisition and rendering methods, it is shown that ESD is an effective indicator determined by system parameters and can …


National Assessment Program : Civics And Citizenship 2013 Year 6 And Year 10 : Technical Report, Kate O'Malley, Eveline Gebhardt, Renee Chow, Martin Murphy, Wolfram Schulz, Judy Nixon, Julian Fraillon Jan 2014

National Assessment Program : Civics And Citizenship 2013 Year 6 And Year 10 : Technical Report, Kate O'Malley, Eveline Gebhardt, Renee Chow, Martin Murphy, Wolfram Schulz, Judy Nixon, Julian Fraillon

Civics and Citizenship Assessment

In 1999, the State, Territory and Commonwealth Ministers of Education, meeting as the tenth Ministerial Council on Education, Employment, Training and Youth Affairs (MCEETYA), agreed to the National Goals for Schooling in the Twenty-first Century. Subsequently, MCEETYA agreed to report on progress toward the achievement of the National Goals on a nationally-comparable basis, via the National Assessment Program (NAP). As part of NAP, a three-yearly cycle of sample assessments in primary science, civics and citizenship and ICT was established. The three previous cycles of NAP – CC were conducted in 2004, 2007 and 2010. As a result of a 2010 …


Hot Zone Identification: Analyzing Effects Of Data Sampling On Spam Clustering, Rasib Khan, Mainul Mizan, Ragib Hasan, Alan Sprague Jan 2014

Hot Zone Identification: Analyzing Effects Of Data Sampling On Spam Clustering, Rasib Khan, Mainul Mizan, Ragib Hasan, Alan Sprague

Journal of Digital Forensics, Security and Law

Email is the most common and comparatively the most efficient means of exchanging information in today's world. However, given the widespread use of emails in all sectors, they have been the target of spammers since the beginning. Filtering spam emails has now led to critical actions such as forensic activities based on mining spam email. The data mine for spam emails at the University of Alabama at Birmingham is considered to be one of the most prominent resources for mining and identifying spam sources. It is a widely researched repository used by researchers from different global organizations. The usual process …


Using Trend Clusters For Spatiotemporal Interpolation Of Missing Data In A Sensor Network, Annalisa Appice, Anna Ciampi, Donato Malerba, Pietro Guccione Jun 2013

Using Trend Clusters For Spatiotemporal Interpolation Of Missing Data In A Sensor Network, Annalisa Appice, Anna Ciampi, Donato Malerba, Pietro Guccione

Journal of Spatial Information Science

Ubiquitous sensor stations continuously measure several geophysical fields over large zones and long (potentially unbounded) periods of time. However observations can never cover every location nor every time. In addition due to its huge volume the data produced cannot be entirely recorded for future analysis. In this scenario interpolation i.e. the estimation of unknown data in each location or time of interest can be used to supplement station records. Although in GIScience there has been a tendency to treat space and time separately integrating space and time could yield better results than treating them separately when interpolating geophysical fields. According …


The Impact Of Different Rotation Patterns On The Sampling Variance Of Seasonally Adjusted And Trend Estimates, Craig Mclaren, David Steel Jun 2013

The Impact Of Different Rotation Patterns On The Sampling Variance Of Seasonally Adjusted And Trend Estimates, Craig Mclaren, David Steel

Professor David Steel

Many economic and social time series are based on sample surveys which have complex sample designs. The sample design affects the properties of the time series. In particular, the overlap of the sample from period to period affects the variability of the time series of survey estimates, and the seasonally adjusted and trend estimates produced from them. The Census X11 and X11ARIMA packages are commonly used to produce seasonally adjusted estimates and can also be used to produce estimates of trend. This paper considers the implications of different overlap patterns on the sampling variance of seasonally adjusted and trend estimates …