im using a mac i dont know if that makes a differenceSolutio

im using a mac, i dont know if that makes a difference

Solution

from math import sqrt

def average(list1):
print(\"list1\",list1)
return sum(list1) * 1.0 / len(list1)
def stdmean(list_of_doubles):
avg = average(list_of_doubles)
variance = list(map(lambda x: (x - avg)**2, list_of_doubles))   
std_dev = sqrt(average(variance))
print(\"Standard Deviation\",std_dev)
print(\"mean\",avg)
  
stdmean([123.4567,134.7833,67.9999,123.55555])