3.16 Students with Disabilities A social skills training program, reported in Psychology in the Schools, was implemented for seven students with mild disabilities in a study to determine whether the program caused improvement in pre/post measures and behaviour ratings. For one such test, these are the pretest and posttest scores for the seven students:

a. Draw a scatterplot relating the posttest score to the pretest score.

b. Describe the relationship between pretest and post- test scores using the graph in part

a. Do you see any trend?

c. Calculate the correlation coefficient and interpret its value. Does it reinforce any relationship that was apparent from the scatterplot? Explain.

Transcribed Image Text:

Student Pretest Posttest Earl 101 113 Ned 89 89 Jasper 112 121 Charlie. 105 99 Tom 90 104 Susie 91 94 Lori 89 99