PAL PSYU3349 Week 8

When predicting a categorical outcome you are predicting:

• Relative differences

• Category membership

• A score on a scale

• Difference in slopes

The Chi-Square Test is a test of:

• Assumptions

• Normality

• Difference between group means

• Association

A bigger chi-square statistic indicates:

• A bigger difference between observed and expected frequencies

• A smaller difference between observed and expected frequencies

• Greater independence among categories

• Assumptions are not met

When running a chi-square test of independence, which variable is the row variable and which is the column variable?

• IV = row, IV = collumn

• DV = row, IV = collumn

• IV = row, DV = collumn

• None of the above

What does the following syntax give you?

tab hair_colour pets, row

• A contingency table for hair_colour and pets, with row percentages

• A contingency table for hair_colour and pets, with column percentages

• Separate frequency tables for hair_colour and pets

• A contingency table for hair_colour and pets (without percentages)

Which of the following is NOT a problem with running a linear regression with a categorical DV?

• Predicted values are not constrained to lie within the logical range 0 to 1

• Distribution of residuals is not normal

• Coefficients have no clear interpretation

• There is no link function that relates IVs to a categorical DV

Which of the following effect sizes is NOT a relative measure?

• Relative risk

• Odds ratio

• Rate difference

• All of these effect sizes are relative measures