Detailed Instructions: 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.
Q: [-77.402, 144.432, 172.214, 113.465, 183.224, 169.995, -86.506, 66.308]
A:
85.716