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: [169.922, 249.47, 142.453, -55.768, 155.357, 6.096, -95.702, 243.569, 31.11, -75.031]

Answer: 77.148


Question: [191.996, -86.097, 81.958, -22.864, 102.176, 41.523, 222.055, 2.513, 184.656, -50.416]

Answer: 66.75


Question: [227.64, 220.635, 89.568]

Answer:
179.281