15.54 Social Skills Training A social skills training program was implemented with seven mildly challenged students in a study to determine whether the program caused improvements in pre/post measures and behaviour ratings. For one such test, the pre- and posttest scores for the seven students are given in the table:

a. Use a nonparametric test to determine whether there is a significant positive relationship between the pre- and posttest scores.

b. Do these results agree with the results of the parametric test in Exercise 12.58?

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Student Pretest Posttest Jazib 101 113 Ned 89 89 Jasper 112 121 Charlie 105 99 Tom 90 104 Feryaal 91 94 Lori 89 99