Question

A marketing researcher wants to investigate how often people of different ages make purchases from Amazon. The marketer decides to look at people from 18-25, 26-30, 30-35, and 36-40. He gathers data from 824 Amazon users, and counts the number of purchases they make in the month of May. He analyzes his data via ANOVA.

1. What is the degrees of freedom between for this study? _______

2. What is the factor in this researcher's design? _________

a. Amazon

b. 824

c. Age

d. The ANOVA

e. 820

f. 4

g. 3

Answer 1

Question 1.

Here,

Number of class=4

Hence,

Degrees of freedom between for this study is,

Df=4-1=3

i.e., option g. is correct.

Question 2.

Now,

Factor in this researcher's design is one which is classified into different class.

Here, Age is classified into 4 groups.

Hence,

Age is factor here.

i.e., option c. is correct.

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