Author Question: A local grocery store recorded the age of a sample of 40 customers who purchased groceries at their ... (Read 236 times)

faduma · **on:** Jun 24, 2018

A local grocery store recorded the age of a sample of 40 customers who purchased groceries at their store. What data is being collected in this study?
a. The age of the customer.

b. The number of customers who enter the grocery store.

c. How much money they spent on groceries.

d. The type of groceries they bought.

Question 2

A correlation matrix must always have 1's along its diagonal (because a variable is always perfectly correlated with itself) and the correlations between variables elsewhere.
a. True
b. False
Indicate whether the statement is true or false