Stats question

Problem 5 Assume that the data in the following table are the result of administering two different tests to two different, but equivalent, samples. Test A Test B XA f 9 0 95 10 ---- 5 105 10 11 10 ----- 115 15 12 20 125 15 13 20 135 30 14 25 145 20 15 10 155 ---- 5 16 10 165 5 a. Using the equipercentile method equate the scores on Test A to Test B. (i.e., Find the Test B equivalent of Test A scores.) b. Equate the test scores using Thurstone's absolute scaling method. c. Create a table showing, side by side, the results of the equipercentile equating method and the Thurstone absolute scaling method obtained from parts a and b