For the data set 1, 7, 7, 7, 8, the mean is 6. What is the mean absolute deviation? A. The mean absolute deviation is 6
B. The mean absolute deviation is 10
C. The mean absolute deviation is 5
D. The mean absolute deviation is 2

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.