Kelly likes to fish at the lake near her house. She caught 8 fish last week, measured them, and put them back in the lake. The lengths of the fish, in inches, are shown.

Question

9, 12, 10, 8, 11, 12, 13, 6

Assuming this data is representative of the fish in the lake, what is the mean length of the fish in the lake?

A.
10.5 inches
B.
3.5 inches
C.
1.875 inches
D.
10.125 inches

Answer 1

To find the mean length of the fish, we need to sum up all the lengths and then divide by the number of fish.

Sum of lengths = 9 + 12 + 10 + 8 + 11 + 12 + 13 + 6 = 81

Number of fish = 8

Mean length = Sum of lengths / Number of fish = 81 / 8 = 10.125

Therefore, the mean length of the fish in the lake is 10.125 inches.

The answer is D. 10.125 inches.