Week 7

Regression and Correlations examine ___________ among variables

Means testing examine ____________ among groups

T-tests examine ____________ between two means

ANOVAs examine differences among.....

• two means

• three means

• more than two means

• more than one mean

What are the three types of t-tests?

• Independent two sample

• Two Sample

• Related sample/paired sample

• One sample

What is an independent two sample t-test used for?

• To test the correlation between two variables.
• To compare the medians of two independent groups.
• To compare the means of two independent groups.
• To analyze the variance within a single group.

Which of the following are nonparametric options of a t-test?

• Mann-Whitney U Test

• ANOVA

• Chi-Square

• Wilcoxon Test

Reorder the following steps for an Independent Two Sample T-test

• Calculate the t-statistic and effect size

• Interpret the results

• Define your hypothesis (null and research)

• Compare the means of the two groups

• Check your assumptions