You test a hypothesis of independence of two variables. The number of observations is 500 and you have classified the data into a 4 by 4 contingency table. The test statistic has __________ degrees of freedom.
A)16
B)9
C)499
D)498

Question

Quizplus · Accepted Answer

The degrees of freedom for testing independence of two variables with a 4 by 4 contingency table is calculated as (number of rows - 1) times (number of columns - 1), which is (4-1) x (4-1) = 9. Therefore, the test statistic has 9 degrees of freedom.

You Test a Hypothesis of Independence of Two Variables