A researcher wants to measure the degree of association between two variables, education and product knowledge. Education is measured by asking respondents to choose from one of the four options: less than high school, high school, some college, college graduate. Product knowledge is measured by asking respondents to pick from one of the three options: no knowledge, some knowledge, very knowledgeable. Given this information, which of the following measures would be appropriate?
a.
Chi-square test
b.
Pearson correlation coefficient
c.
Coefficient of determination
d.
Spearman rank-order correlation coefficient
e.
Scatter plot
Answer: D