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: [-66.387, 135.639, 182.921, 175.573, 105.67, -29.751, 156.67, 83.119, 19.538]

Answer: 84.777

Question: [-31.252, 246.934, 96.512, 19.356, -50.759, 134.528, 176.914, 17.007, 171.802]

Answer: 86.782

Question: [113.626, 85.944, 91.318, 34.374, 166.521, 195.567, 171.298, -57.102, -40.545, 101.75]

Answer:
86.275