Please answer all questions.

All of thefollowing multiple choice questions may have one or more correct answers. Please select all of the correct answers if more than one exists 1. A nonparametric test would be preferred over a parametric test when _? [2 points] a. the researcher is unsure of which statistical test to perform b. the scores represent ranks instead of a continuous variable c. the sample size is greater than 50 d. there do not appear to be any "outliers\" in the data e. the outcome was measured incorrectly 2. In a chi-square test of independence, _ are compared: (2 points] a. means from two independent groups b. medians from two independent groups c. ranked scores from two independent groups d. observed frequencies and expected frequencies of occurrence of an event e. None of the above 3. If a chi-square test was performed on a table with 4 rows and 4 columns, there would be _ degrees of freedom: (2 points) a. 6 b. 8 c. 9 d. 16 e. The answer depends on the sample size Nonparametric tests are used for all of the following situations except [2 points) The level of measurement is ordinal The level of measurement is interval The data follows a normal distribution The data are highly skewed 9-9 yrs |_ The Mann-Whitney U test is a nonparametric test that may be used to analyze data from a design with levels of the independent variable [2 points) within-subjects; three or more between-subjects; two between-subjects; three or more within-subjects; two slop-s True/False: Indicate whether each of the following statements about the Chi-Square distribution is true or false [6 points) a. The rejection region is always in the right tail of the distribution. b. The distribution is positively skewed. c. lts shape depends on the degrees of freedom. d. As the degrees of freedom increase, the critical value becomes larger e. It is symmetric f. Negative values indicate a non-signicant p-value