TASK DEFINITION: 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.
PROBLEM: [15.748, -13.369, -79.943, -2.78, 169.174, 101.44, -84.923, 189.589, 83.541, -37.629]

SOLUTION: 34.085

PROBLEM: [247.332, 97.053, 43.697, 51.168, -56.25, 163.444]

SOLUTION: 91.074

PROBLEM: [11.574, 125.196, -0.087, 150.977, 142.293, 146.135, 19.524, 169.874, 163.098, -51.309]

SOLUTION:
87.728