Question

The number of degrees of freedom in a 3x3 contingency table is:
a) 8
b) 4
c) 3
d) 9​

Answer 1

Answer:

8×3=24

4×3=12

3×3=9

9×3=27

Answer 2

Given:

A 3×3 contingency table.

To find:

The number of degrees of freedom in a 3x3 contingency table.

Solution:

We know that the number of degrees of freedom in a m×n contingency table is (m-1)×(n-1).

Thus, for the given 3×3 table, its number of degrees of freedom will be:

= (3-1)×(3-1)

= 2×2

= 4

Thus option B is the correct option.