Cumulative Final Exam (Part 2) Flashcards
What is the 50th percentile, or the middle, of all scores in the dataset on a particular variable?
Median
What is the average distance from the mean on a particular variable?
Standard deviation
What is the average of all scores in the dataset on a particular variable?
Mean
What provides a measure of “spread” on a particular variable by subtracting the lowest score from the highest score?
Range
What is the most common score in the dataset on a particular variable?
Mode
What is the average squared distance from the mean on a particular variable?
Variance
What tests the strength of the relationship between two continuous variables by providing a ratio of how much they vary together relative to vary separately?
Pearson’s correlation
What tests mean differences between two separate groups relative to the standard error?
Independent samples t-test
What tests whether the proportions on one nominal variable differ across levels of another nominal variable?
Chi-square test of independence
What tests whether the mean on a particular variable differs from the population mean on that variable?
Chi-square goodness of fit
What tests whether the proportions of people on each level of a nominal variable differ from the proportions expected in the population?
Chi-square goodness of fit
What tests whether the proportion of variance accounted in an outcome variable for by a set of predictor variables is significant?
Regression
What tests mean differences between two or more separate groups by comparing the ratio of systematic variance relative to error variance?
Between-subjects ANOVA
What tests the strength of the relationship between two ordinal variables by providing a ratio of how much they vary together relative to vary separately?
Spearman’s correlation
What tests mean differences relative to the standard error of the same sample of participants’ ratings of the same variable under two different contexts?
Paired samples t-test
What tests mean differences of the same sample of participants’ ratings of the same variable under two or more different contexts by comparing the ratio of systematic variance relative to error variance?
Within-subjects ANOVA
What is the effect size for correlation?
r2
what is the effect size for t-test?
cohen’s D
what is the effect size for regression?
R2
what is the effect size for ANOVA?
η2
what is the effect size for chi-square test of independence?
cramer’s V
What is the best stat for birth order (open ended; central tendency)?
median
what is the best stat for birth order (open-ended; variability)?
range
what is the best stat for gender (nominal; central tendency)?
frequencies/percentages
what is the best stat for gender (nominal; variability)?
none
what is the best stat for happiness (interval; central tendency)?
mean
what is the best stat for happiness (interval; variability)?
standard deviation, range optional
What is the best stat for age (open-ended; central tendency)?
mean
What is the best stat for age (open-ended; variability)?
standard deviation, range optional
what is the best stat for number of facebook friends (open-ended; central tendency)?
mean
What is the best stat for number of facebook friends (open-ended; variability)?
standard deviation, range optional
Does a relationship exist between BMI and number of times per week you eat fast food (BMI: open-ended, fast food: open-ended)? (What is best test?)
pearson’s correlation
Do men and women differ in number of times they cry per month (gender: nominal, cry: open-ended) (what is best test?)
independent samples t-test
Does a relationship exist between a parents’ social class (ParentSES: ordinal, PsSES: ordinal) (what is the best test)?
spearman’s correlation
Participants rate their attraction to opposite-sex targets whose faces have been digitally altered to create a masculinized and feminized version of the face. Therefore, participants rate faces that are either masculinized or feminized (i.e. they rated both targets). Do their attraction ratings differ if the faces were masculinized versus feminized (Masc_ Attract, Fem_Attract:) (what test is best)?
Paired samples t-test
Do men and women differ in whether they experienced a heart attack (PSex, Heart) (what test is best)?
Chi-square test of independence
Do the proportions of students identifying as black, white, asian, hispanic at SXU differ from those in Chicago (Race: nominal) (what test is best)?
chi-square goodness of fit
Does the average number of children in the sample from the average number of children in the population (Kids; open-ended) (what test is best)?
one-sample t-test
Do ACT score and high school GPA account for a significant proportion of variance in college GPA (ACT: open-ended, HS GPA: open-ended, GPA: open-ended) (what test is best)?
Regression
Are there race/ethnicity differences in how many times one goes to church per month (Race: nominal, Church: open-ended) (what test is best)?
between-subjects ANOVA
participants rate the deliciousness of three different types of ice cream: vanilla, chocolate, and strawberry (i.e. they rated all three flavors) (what test is best)?
within-subjects ANOVA
is there a relationship between level of alertness and level of happiness (correlation) (what effect size is best)?
r2
Do number of daily servings of fruits/veggies, protein, carbs, and fat account for a significant proportion of varince in BMI? (chi-square test of independence) (what is effect size is best)?
Cramer’s V
Are there race/ethnicity differences in how many times one goes to church per month (ANOVA) (what effect size is best)?
η2
Do men and women differ in number of times they cry per month (t-test) (what stat is best)?
Cohen’s D
