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A social skills training program was implemented with seven mildly handicapped students in a study to determine whether the program caused...

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A social skills training program was implemented with seven mildly handicapped
students in a study to determine whether the program caused improvement in
pre/ post measures and behavior ratings . For one such test , the pre - and posttest
scores for the seven students are given in the table .
Subject
Pretest ( * )
Posttest ( v )
Andy
105
1 17
Brenda
93
93
Carl
116
125
David
109
103
Earl
94
108
Faith
95
98
Gina
93
103
What type of correlation , if any , do you expect to see between the pre - and
posttest scores ? Does the correlation appear to be positive or negative ?!
Calculate the correlation coefficient r . Is there a significant positive*
correlation between * and y ?

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