Row Standard Deviation

Problem

Compute the sample standard deviation (denominator n - 1) of each row of data.

Return a list of standard deviations, one per row.

Hint

Rows of length 1 would divide by zero; the inputs have at least two entries per row.

case 1

in: [[[1,2,3]]]

expected: [1]

case 2

in: [[[1,1],[2,2]]]

expected: [0,0]

case 3

in: [[[1,3,5,7]]]

expected: [2.581988897471611]

case 4

in: [[[0,2],[4,6]]]

expected: [1.4142135623730951,1.4142135623730951]

Starter codePython

def row_std(data):
    # Your code here
    pass

4 test cases · run your code against them in the editor