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: [246.278, 103.84, 214.867, -73.466, 230.048, -72.322, 172.891, 212.306, -78.335, 122.406]

Answer: 107.851


Question: [5.703, -17.365, 21.827, 38.836, 5.17, -15.533]

Answer: 6.44


Question: [136.464, 209.582]

Answer:
173.023