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: [102.553, 221.594, -69.406, 192.534, 139.703, -38.208, 228.963, 32.921]

Answer: 101.332


Question: [87.234, -30.861, 221.46, 120.15, -85.065, 67.024, 144.174, -64.546]

Answer: 57.446


Question: [248.326, 83.529, -78.248, 136.997, 242.493]

Answer:
126.619