A test is conducted to compare three different income tax software packages to determine whether there is any difference in the average time it takes to prepare income tax returns using the three different software packages. Ten different person's income tax returns are done by each of the three software packages and the time is recorded for each. Which of the following is true?
A) The total degrees of freedom is 30.
B) The between blocks degrees of freedom is 2.
C) The between samples degrees of freedom is 2.
D) The three software packages are the blocks.

Question

Quizplus · Accepted Answer

BThe between samples degrees of freedom is calculated as the number of groups minus one, which in this case is 3 - 1 = 2, making option C correct. The term "blocks" in experimental design usually refers to groups of subjects that are similar in some way, and in this context, the software packages are the treatments or samples, not blocks. Therefore, option B is incorrect in its terminology but correct in its calculation for the degrees of freedom associated with comparing the means of the three software packages.

A Test Is Conducted to Compare Three Different Income Tax