Using the information provided, indicate which statistical test you think should

Question

Using the information provided, indicate which statistical test you think should be used for each of the following situations:

Here are some test names provided:

A. Nonparametric Test                        B. Parametric Test

                  1. Mann-Whitney U-test                    a. Paired t-test

                  2. Friedman test                                  b. One-way ANOVA

                  3. Kruskall-Wallis test                        c. Independent groups t-test

                  4. Wilcoxon signed-ranks test            d. Repeated measures ANOVA

a.Independent variable: normal birth weight vs. low birth weight infants; dependent variable: breathing rate (in breaths per minute).

b.Independent variable: time of measurement of same patient (before, during, and after surgery); dependent variable: heart rate.

c.Independent variable: time of measurement (before, during, and after intervention); dependent variable: did vs did not exercise regularly.

d.Independent variable: infertility treatment A vs infertility treatment B vs control condition; dependent variable: did vs did not become pregnant.

Explanation / Answer

Independent variable: normal birth weight vs. low birth weight infants; dependent variable: breathing rate (in breaths per minute). Mann-Whitney U
Independent variable: time of measurement of same patient (before, during, and after surgery); dependent variable: heart rate. Wilocoxon Signed Ranks
Independent variable: time of measurement (before, during, and after intervention); dependent variable: did vs did not exercise regularly. Kruskall Wallis test
Independent variable: infertility treatment A vs infertility treatment B vs control condition; dependent variable: did vs did not become pregnant. Friedman test

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