A 3 x 5 table is considered to test the association of two variables having 3 and 5 categories respectively. A Chi-square test statistic with value 19.0 was obtained. What is the degrees of freedom associated with this test?
df = n-1 cells
To determine the degrees of freedom associated with a Chi-square test, you need to use the formula:
df = (r - 1) * (c - 1)
Where "r" represents the number of rows and "c" represents the number of columns in the table.
In this case, the table is a 3 x 5 table, meaning there are 3 rows and 5 columns. Therefore, you can substitute these values into the formula to find the degrees of freedom:
df = (3 - 1) * (5 - 1)
= 2 * 4
= 8
So, the degrees of freedom associated with this test is 8.