Instructions: Type out your responses. Submit your WORD DOC on Blackboard before
ID: 3220361 • Letter: I
Question
Instructions: Type out your responses. Submit your WORD DOC on Blackboard before the due date listed on the syllabus. Use as much space as needed. 1. Answer the following questions. a. What does the correlation coefficient measure? b. What is the possible range for the correlation coefficient? c. What does a correlation of 0.00 e, zero) mean? What does it NOT mean? 2. Under certain circumstances, correlations provide deceptive results. Under each of the following conditions, is Pearson's r an underestimate, an overestimate, or either an yellow the underestimate of the true relationship between variables. Highlight in appropriate response. a. Nonlinear data: Overestimate Underestimate Either b. Outliers: Overestimate Underestimate Either c. Restriction in range: Overestimate Underestimate Either 3. For each of the following cases, what is the critical value for the correlation coefficient? If Critical Value Is df- 50, at 05, one-tailed test df 50, a 01, one-tailed test df- 20, a 05, two-tailed test df 100, a .01, two-tailed testExplanation / Answer
(1) The correlation coefficient (r) measures the degree of association between two variables. It indicates whether two variables are correlated or not.
(b) It lies in the range -1 r 1
(c) r = 0 means there is no linear correlation between the two variables. It does not mean that the two variables are not correlated at all.