Question

The mean can be found when you add all the numbers in a set, and then divide that sum by the amount of numbers given. Find the average tree growth of four Douglas Fir trees: 2.2 in., 1 1/5 in., and 1 1/2 in.​

Answer 1

49/30

Explanation:

To find the mean, add up 2.2 + 1 1/5 + 1 1/2 to get 49/10

Then divide that by 3 (it says four Douglas trees but you only put 3 types)

49/10 divided by 3 is 49/10 times 1/3, which is 49/30