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  1. Prepare
  2. Python
  3. Numpy
  4. Mean, Var, and Std
  5. Discussions

Mean, Var, and Std

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441 Discussions

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  • nareshpadiyar
     + 0 comments
    import numpy as np 

N,M = map(int, input().split())

input_list = []

for i in range(N):
    input_list.append(list(map(int, input().split())))
 
np_input_list = np.array(input_list, dtype=int)   

print(np.mean(np_input_list, axis = 1))
print(np.var(np_input_list,  axis = 0))
print(round(np.std(np_input_list),11))

  • loucifsk
     + 0 comments

    Had to round numpy.std value off to the 11th decimal ( i know i'm not the first one to find that out ;) )

    import sys, re, numpy

entry = sys.stdin.read().replace(' ', '').splitlines()[1:]

my_array = []
for line in entry:
    my_array.append([int(i) for i in re.findall(r"\d", line)])
    
my_array = numpy.array(my_array)
print(numpy.mean(my_array, axis=1), numpy.var(my_array, axis=0), round(numpy.std(my_array, axis=None), 11), sep='\n')

  • [deleted]Challenge Author     + 0 comments

    For Python3

    It itsnt mentioned to round off the std value to 11 decimals. So, use round function just to match the answer.

    import numpy

n, m = map(int, input().split())
arr = numpy.array([input().split() for i in range(n)], dtype=int)

print(numpy.mean(arr, axis=1))
print(numpy.var(arr, axis=0))
print(round(numpy.std(arr), 11))

  • dineshnampalli21
     + 0 comments

    import numpy N, M = map(int, input().strip().split()) my_arr = numpy.array([input().strip().split()[:M] for _ in range(N)], dtype=numpy.float_) print(numpy.mean(my_arr, axis=1)) print(numpy.var(my_arr, axis=0)) print(round(numpy.std(my_arr, axis = None), 11))

  • yedduladastagari
     + 0 comments

    import numpy

    n , m = map(int,input().split())

    arrayList = [] for i in range(n): arrayList.append(list(map(int,input().split())))

    my_array = numpy.array(arrayList) print(numpy.mean(my_array, axis = 1)) print(numpy.var(my_array, axis = 0)) print(round(numpy.std(my_array, axis = None), 11))