To get ready for the daily lunch rush, a deli prepared 30 salads topped with croutons. The manager randomly selected 5 of the salads and counted the number of croutons on each salad. The results are shown in the table below. Sample of Salads Salad Number of Croutons A 11 B 16 C 11 D 12 E 15 Assuming the sample was representative of all the prepared salads, what was the mean number of croutons per salad? A. 12 B. 11 C. 14 D. 13
To find the mean number of croutons per salad, we need to add up all the croutons and divide by the number of salads.
Total number of croutons = 11+16+11+12+15 = 65
Number of salads = 5
Mean number of croutons per salad = 65/5 = 13
Therefore, the correct answer is D. 13.