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: [146.815, 125.411, 84.472, -63.01, 79.256, -34.213, 248.004, -86.96, -39.397]

Answer: 51.153

Question: [18.155, 114.069, 197.871, -99.696, 201.18]

Answer: 86.316

Question: [53.339, -25.165, 198.489, -1.704, 19.883, 53.586, 60.527, -92.041, 59.494, 138.565]

Answer:
46.497