Based on the study's results, which statement about the loyalty program's impact is most accurate?
Answer
A
The loyalty program increased purchase frequency for all customers equally.
B
The average purchase frequency is higher for loyalty program members, but the standard deviation shows that purchase behavior varies widely among participants.
C
Despite the high average purchase frequency, the loyalty program had no measurable impact on customer purchases, as shown by the standard deviation.
D
Customers who did not join the loyalty program made as many purchases as those who joined.