Name : ICKY STATISTICS Quiz a Part IA 1. A maximum linear correlation is expressed as: a. 100%% b. 99 +10 . 00 d. +1 . 00 2. The more a correlation deviates from zero, : a . the more it is certain to be positive in sign the more it is certain to be negative in sign C . the more it is certain that the measured variables are independent of each other the better its predictive accuracy 3. When two sets of measures are independent of each other, then the correlation between them must be: a . negative b. positive c. zero d. can't be determined 4 . Of the following correlation coefficients, which expresses the weakest association? a . . 10 b . -. 20 c. -. 50 d. - 1. 00 When two variables, A and B, are strongly correlated, it means that: a . A has caused B B has caused A C . some third variable has caused both A and B to occur together d . none of these . 6. The correlation coefficient, in and of itself, : a. never proves causation b. never rules out causation c. allows for better-than-chance predictions d. all of these 7. The originator of the product-moment correlation technique was : Gauss b. Pascal Pearson d. Spearman 8. The correlation between parental income and the amount of financial aid awarded by the college to students should most probably be: a. positive b. negative c. zero d. none of these 9 . Among elementary school children, the correlation between ag and height would most probably be: . positive b. negative c. zero d. non- linear 10 . A "significant correlation" is one which: a . is especially meaningful b. does not deviate from zero c . indicates a valid difference d. can be generalized to the population