A test for independence is applied to a contingency table with 3 rows and 5 columns for two nominal variables. The degrees of freedom for this test will be:
A) 20
B) 12
C) 8
D) 15
Degrees of freedom = (r - 1)(c - 1) ...where r = number of rows and c = number of columns.
I'll let you take it from there.
Thank you MathGuru
To determine the degrees of freedom for a test of independence applied to a contingency table, we need to use the formula:
df = (number of rows - 1) * (number of columns - 1)
In this case, the contingency table has 3 rows and 5 columns, so the degrees of freedom can be calculated as:
df = (3 - 1) * (5 - 1)
= 2 * 4
= 8
Therefore, the correct answer is C) 8.