The data shows the number of salad wraps sold on each day for two weeks at a sandwich shop.


Week 1: 15, 13, 14, 14, 13, 12, 13

Week 2: 18, 3, 15, 15, 16, 14, 16


Which statement about the data is true?


a. The mean of Week 1 data is a good estimate of the sandwich shop's daily sales.



b. The mean of Week 2 data is a good estimate of the sandwich shop's daily sales.



c. Both the mean of Week 1 data and the mean of Week 2 data are good estimates of the sandwich shop's daily sales.



d. Neither the mean of Week 1 data nor the mean of Week 2 data is a good estimate of the sandwich shop's daily sales.