___ 3. semipartial correlation c. When a third variable, is removed from but not Z, X, from Y. Activity 17.7 Determine whether the following are characteristics of a partial correlation (P) or a semipartial correlation (S). 1. ______ When the effect of is removed. Z 2. ______ Controlling for Z. 3. ______ Interest is on the correlation between two variables, while removing the effect of other variables from one of the two variables only. 4. ______ When the correlation between two variables is mediated by other variables. 5. ______ When is removed from but not from Z X, Y. 6. ______ When the correlation between and exists solely because it is affected by a X Y common cause, Z. 7. ______ Spurious correlation. CHAPTER 18 Nonparametric Tests of Statistical Inference Activity 18. 1 Answer the following questions. 1. What are nonparametric tests? ___________________________________________________ 2. Nonparametric tests are applied under what two kinds of conditions? ____________________ 3.Why are parametric tests more powerful than nonparametric test? _______________________ 4. When do nonparametric tests begin to show advantages in statistical power over their parametric counterparts? _________________________________________________________ Activity 18.2 Match the concepts in the left-hand column with the descriptions in the column.
___ 3. semipartial correlation c. When a third variable, Z, is removed from X, but not from Y. Activity 17.7 Determine whether the following are characteristics of a partial correlation (P) or a semipartial correlation (S). 1. ______ When the effect of Z is removed. 2. ______ Controlling for Z. 3. ______ Interest is on the correlation between two variables, while removing the effect of other variables from one of the two variables only. 4. ______ When the correlation between two variables is mediated by other variables. 5. ______ When Z is removed from X, but not from Y. 6. ______ When the correlation between X and Y exists solely because it is affected by a common cause, Z. 7. ______ Spurious correlation. CHAPTER 18 Nonparametric Tests of Statistical Inference Activity 18. 1 Answer the following questions. 1. What are nonparametric tests? ___________________________________________________ 2. Nonparametric tests are applied under what two kinds of conditions? ____________________ 3.Why are parametric tests more powerful than nonparametric test? _______________________ 4. When do nonparametric tests begin to show advantages in statistical power over their parametric counterparts? _________________________________________________________ Activity 18.2 Match the concepts in the left-hand column with the descriptions in the column.
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