Psychological Statistics Quiz

What type of relationship is required for Pearson's r correlation?

• Linear

• Categorical

• Non-linear

• Causal

What level of data is required for Pearson's r?

• Nominal

• Ordinal

• Interval or Ratio

• Categorical

How many variables are required for Pearson's r correlation?

• One

• Two continuous variables

• Three

• Two categorical variables

What types of data can Spearman's rho be used with?

• Only interval

• Two ordinal or non-normal continuous variables

• Nominal

• Binary

What is the purpose of the Chi-Square test for homogeneity?

• Predicts outcomes

• Tests regression slope

• Compares categorical variable distributions

• Measures central tendency

Match the type of Chi-Square test with its purpose:

• Homogeneity → Predict trends

• Homogeneity → Compares distributions Independence → Tests for statistical independence Goodness of fit → Tests observed vs expected frequencies

• Homogeneity → Measures central tendency

• Independence → Checks normality

What is the purpose of an independent samples t-test?

• Compares means of two groups

• Measures frequency

• Analyzes ranking

• Tests homogeneity

What describes samples in a dependent samples t-test?

• Independent

• Categorical

• Random

• Paired or related

What assumption is required for the Mann-Whitney U-test?

• Normal distribution

• Independent variables

• Similar-shaped distributions

• Equal variances

What type of data is required for the Wilcoxon signed-rank test?

• Nominal

• Categorical

• At least ordinal

• Ratio only