Correlation Methods Quiz

Which correlation method is best for two continuous variables with a linear relationship?

• Phi coefficient

• Point-biserial

• Pearson’s r

• Spearman’s rho

What type of correlation should you use for ranked (ordinal) data?

• Kendall’s tau

• Spearman’s rho

• Point-biserial

• Pearson’s r

If one variable is continuous and the other is a true binary variable (e.g., 0 = no, 1 = yes), which method is best?

• Point-biserial

• Phi coefficient

• Pearson’s r

• Spearman’s rho

Which method is used to measure the correlation between two naturally dichotomous variables?

• Point-biserial

• Spearman’s rho

• Phi coefficient

• Pearson’s r

When data is not normally distributed, which correlation method is more appropriate?

• Point-biserial

• Pearson’s r

• Phi coefficient

• Spearman’s rho

If you’re analyzing the relationship between age rank and test rank, what correlation method should you use?

• Spearman’s rho

• Kendall’s tau

• Phi coefficient

• Pearson’s r

Which of the following is an important assumption of Pearson’s correlation?

• The data must be ordinal

• The relationship between variables must be non-linear

• The variables must be categorical

• The relationship between variables must be linear