1. To crete a total score from several variables in a dataset (choose all that apply):

Group of answer choices

do histogram with the normal curve first

Make sure you give the new variable a name

Use the compute function

Assure that all of the items "go in the same direction"

2. It is a sound practice to make sure the variable's data are cleaned and error free before conducting any analyses.

Group of answer choices

True

False

3. The differences between a Kruskal-Wallis test, and a Mann Whitney U test are as follows (choose the best answer):

Group of answer choices

The Mann Whitney U is a parametric test and the Kruskal Wallis is a descriptive statistic

The Mann Whitney U test is used for two groups, the Kruskal-Wallis is used when the variable of interest has at least 3 groups

There are no differences, they both compare groups on the differences in means and can be used in the same way

4. An example of a directional hypothesis that emerges from the Canublat et al. research on pain and anxiety associated with peripheral IV insertion is: (choose the best answer)

Group of answer choices

Perceived anxiety will not be affected during peripheral IV cannulation with cold compresses

Buzzy reduces procedural pain felt during peripheral IV cannulation in pediatric patients

Perceived pain will not be affected by Buzzy during peripheral IV cannulation

Buzzy makes no difference in perceived pain or anxiety in pediatric patients

5. When the Bonferroni correction is manually applied to the t-test results provided in tables 2 and 3 in Canublat et al. (2015), the results demonstrate that the researchers properly rejected the null hypotheses in favor of the alternate.

Group of answer choices

True

False

6.

Consider the variable "alcohol" and the "trubslep" variable in the sleep 5ED dataset. When a dataset is badly skewed like the "alcohol" variable, a good solution may be to creat a dichotomous variable from the skewed data and perform a 2x2 chi square to determine whether or not there is a statistically significant relationship between daily alcohol consumption and trouble sleeping.

Group of answer choices

True

False