have been: 21. In doing a Pearson r with 10 degrees of freedom, there must a. 10 separate scores b . 22 separate scores c. 10 pairs of scores d . 12 pairs of scores 22. For a given number of degrees of freedom, when the obtained r is equal to the critical tabled value of r, then: a. Ho is accepted is rejected c. Ho is rewritten as Ha d. Ho cannot be evaluated . With 5 degrees of freedom, the critical tabled value of the Pearson r is . 75 for an . 05 alpha error. If one were to obtain a Pearson r value of -. 76, then: a. Ho would be accepted b. Ho would be rejected the alpha error would be negative d. none of these 24. Any Pearson r which is significant at an alpha of . 01 must also : a . be significant at . 001 b. be significant at . 05 C . be significant at any alpha level be positive 25. The Pearson r may only be used when the data form is at least : a. nominal b. ordinal c. interval d, ratio 26. The proportion of the variability in the Y distribution which is accounted for by the variability in the X distribution, is determined by: a. the Spearman r b . the null hypothesis C. the coefficient of contingency d . the coefficient of determination 27. A Pearson r of . 70 yields a coefficient-of-determination accuracy estimate of : a. 70%% b . 35% c. 49% d. . 05% 28. A Pearson r of value of -. 20: a . can never be significant b. must always be significant C . cannot be evaluated d. none of these . The Pearson r assumes that: a . the samples are randomly selected b . the association between the variables is linear C . the measures do not depart from normality d. all of these 3