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Evaluation Of Using The Bootstrap Procedure To Estimate The Population Variance, Nghia Trong Nguyen May 2018

Evaluation Of Using The Bootstrap Procedure To Estimate The Population Variance, Nghia Trong Nguyen

Electronic Theses and Dissertations

The bootstrap procedure is widely used in nonparametric statistics to generate an empirical sampling distribution from a given sample data set for a statistic of interest. Generally, the results are good for location parameters such as population mean, median, and even for estimating a population correlation. However, the results for a population variance, which is a spread parameter, are not as good due to the resampling nature of the bootstrap method. Bootstrap samples are constructed using sampling with replacement; consequently, groups of observations with zero variance manifest in these samples. As a result, a bootstrap variance estimator will carry a …


Influence Of Stereotyping And Prejudices On Perceptions Of Superheroes, Emily A. Sanchez Mar 2018

Influence Of Stereotyping And Prejudices On Perceptions Of Superheroes, Emily A. Sanchez

Electronic Theses and Dissertations

Fictional superheroes possess characteristics that can be identified with on a human level (e.g., gender and race); however, their superhuman nature may lead them be evaluated as a distinct outgroup. The current study attempted to assess how racial and gender attitudes may affect perceptions of superheroes and how other participant characteristics may impact ratings. The current study found that gender and race influenced evaluations of perceived attributes of superhero drawings. Figures depicted with an unnatural skin tone were rated less favorably. Although, there were no differences between ratings of Black and White heroes, Black heroes were consistently rated higher, particularly …


Influence Of Stereotyping And Prejudices On Perceptions Of Superheroes, Emily A. Sanchez Mar 2018

Influence Of Stereotyping And Prejudices On Perceptions Of Superheroes, Emily A. Sanchez

Electronic Theses and Dissertations

Fictional superheroes possess characteristics that can be identified with on a human level (e.g., gender and race); however, their superhuman nature may lead them be evaluated as a distinct outgroup. The current study attempted to assess how racial and gender attitudes may affect perceptions of superheroes and how other participant characteristics may impact ratings. The current study found that gender and race influenced evaluations of perceived attributes of superhero drawings. Figures depicted with an unnatural skin tone were rated less favorably. Although, there were no differences between ratings of Black and White heroes, Black heroes were consistently rated higher, particularly …