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: [178.031, -52.967, 31.914, 174.681, 155.375, -3.831, 165.333, 10.246, -14.468]

Answer: 71.59


Question: [207.449, 85.584, -55.048, -10.53, 30.755]

Answer: 51.642


Question: [17.204, 202.765, 244.627, -20.782, 137.735, -35.481]

Answer:
91.011