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: [138.526, 60.81, 233.845, -33.602, 189.784, 13.888, 184.543, 53.635, 18.299, -87.132]

Answer: 77.26


Question: [-1.31, 169.522, -26.172, 111.289]

Answer: 63.332


Question: [54.581, 167.635, 218.629, -54.812, 36.721, -46.303, 36.334, 142.409]

Answer:
69.399