2.6 During the last 3 years Consolidated Oil Company expanded its gasoline stations into convenience food stores (CFSs) in an attempt to increase total sales revenue. The daily sales (in hundreds of dollars)

from a random sample of 10 weekdays from one of its stores are:

6 8 10 12 14 9 11 7 13 11

a. Find the mean, median and mode for this store.

b. Find the five-number summary.