A credit score is a numerical value between 300 and 850 that measures a person’s creditworthiness. The following table shows the credit scores for randomly selected individuals from Texas, Pennsylvania, California, and Florida, who are grouped according to their ages. These data can also be found in the file credit scores. xlsx.
a. Using α = 0.05, is there significant interaction between the state and age of the individual?
b. Using a two way ANOVA and α = 0.05, does the state have an effect on the person’s credit score?
c. Using a two way ANOVA and α = 0.05, does the age group of the individual have an effect on their credit score?
d. If warranted, determine which means are significantly different using α = 0.05.
e. Construct an interaction plot for the state and the age group.

  • CreatedJuly 28, 2015
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