Exhibit 7-3: A researcher is examining the effects of a computer-based training program designed to teach algebra.The researcher randomly selects subjects for two groups and gives one group the computer training and the other standard teaching methods to see if the results of the two methods differ.The following scores are from the subjects' final test.
$ \begin{array}{ll}{\text {CBT }}{} & \text {Control }\ 52 & 65 \ 55 & 45 \ 56 & 47 \ 53 & 46 \ 50 & 47 \ 49 & 33 \ 52 & 39 \ 53 & 49\end{array} $
-Refer to Exhibit 7-3.Which test is most appropriate for these data and hypothesis?
A) Chi square
B) Correlated t-test
C) Independent t-test
D) Pearson's r

Question

Exhibit 7-3: A researcher is examining the effects of a computer-based training program designed to teach algebra.The researcher randomly selects subjects for two groups and gives one group the computer training and the other standard teaching methods to see if the results of the two methods differ.The following scores are from the subjects' final test.
 $ \begin{array}{ll}{\text {CBT }}{} & \text {Control }\ 52 & 65  \ 55 & 45 \ 56 & 47 \ 53 & 46 \ 50 & 47 \ 49 & 33 \ 52 & 39 \ 53 & 49\end{array} $
-Refer to Exhibit 7-3.Which test is most appropriate for these data and hypothesis?
A) Chi square
B) Correlated t-test
C) Independent t-test
D) Pearson's r

Quizplus · Accepted Answer

The most appropriate test for comparing two independent groups of scores is the independent t-test. Chi square is used for examining categorical data, while Pearson's r measures the strength and direction of a linear relationship between two continuous variables. Correlated t-test is used when there are two related samples (e.g., pre-test and post-test scores).

Exhibit 7-3: a Researcher Is Examining the Effects of a Computer-Based