Repeated measures experiments measure the same set of research participants two

Question

Repeated measures experiments measure the same set of research participants two or more times, while matched-subjects experiments study participants who are matched on one or more characteristics. Which of the following are true for both a repeated-measures experiment and a matched-subjects experiment when used to compare two treatment conditions? Check all that apply. If the researcher has n number of participants to use in the experiment, then the degrees of freedom will be the same in a repeated-measures experiment or in a matched-subjects experiment. The researcher must compute a pooled variance to compute a t statistic. The researcher must compute an estimated standard error for the mean difference score to compute a t statistic. Participants in both types of experiments are all measured the same number of times. A matched-subjects experiment produced at statistic with a df of 13. How many subjects participated in this study? 13 28 26 14 For a repeated-measures experiment comparing two treatment conditions, the t statistic has a df of 17. How many subjects participated in this study? 18 17 36 34

Explanation / Answer

Solution:-

1) The researcher must compute an etimated standard error for the mean difference score to compute a t statistics.

2) The subject participted in the study is 28.

In Matched pair degree of freedom = n - 1

where n = number of pairs

n - 1 = 13

n = 14

There are 14 pairs that means 28 subjects.

3) The subject paticipated in the study = 18

In repeated measure test, degree of freedom = n - 1

where n = number of subjects

n - 1 = 17

n = 18

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