In this task you will be given a list of numbers and you need to find the mean (average) of that list. The mean of a list can be found by summing every number in the list then dividing the result by the size of that list. The output should be rounded to 3 decimal places.
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Question: [22.971, 146.947, 84.327, 123.65, -30.682, -43.973, 211.836, 146.398, -65.992]

Answer: 66.165


Question: [74.43, 138.738, 114.237, 138.845, 188.957, 103.103, -43.988, -68.085, 157.274]

Answer: 89.279


Question: [39.516, -43.961, -54.183, 5.186, 0.495, 131.744, -97.181, 131.921, 181.318]

Answer:
32.762