MediumStatisticsst-367

Chi Square Expected Cell Count

Problem

For a contingency table under independence, the expected count of a cell is row_total * col_total / grand_total.

Given the row total, the column total, and the grand total, return the expected count.

Hint

The margins determine the expected joint count.

case 1

in: [30,50,100]

expected: 15

case 2

in: [10,20,200]

expected: 1

case 3

in: [45,90,300]

expected: 13.5

Starter codePython

def chi_square_expected_cell_count(row_total, col_total, grand_total):
    # Your code here
    pass

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