The following data are from a random sample of thirty cases from a study by Howell & Huessx (1981). The data represent the relationship between IQ scores on the Otis-Lennon Mental Abilities Test, administered while subjects were in JCDA in min th

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Regression Worksheet
The following data are from a random sample of thirty cases from a study by
Howell & Huessx (1981). The data represent the relationship between IQ scores
on the Otis-Lennon Mental Abilities Test, administered while subjects were in
fifth to eighth grade, and GPA in ninth grade.
Subject
1
IQ
102
GPA
2.75
108
4,00
109
118
2.25
3.00
1.67
2,25
2,50
79
6.
88
7
100
92
131
83
3.50
3.75
2.75
10
11
115
92
95
4.00
2,23
12
13
3.00
90
106
85
14
2.50
15
2.75
2.75
16
95
97
17
2.75
2.67
18
19
93
2,00
20
81
111
2,00
3.00
1.50
21
22
95
23
24
25
106
83
81
3.75
.67
1.50
26
112
85
115
3.00
27
1.75
28
3.75
29
30
86
1,00
85
2,50
Is IQ related to GPA?
If a student's IQ is 117, what GPA would you predict?
How much of the variation in GPA is explained by IQ?
What can you conclude based upon the standard error of the estimate?
Complete an APA, 3 part write-up for the linear regression worksheet.
Transcribed Image Text:Regression Worksheet The following data are from a random sample of thirty cases from a study by Howell & Huessx (1981). The data represent the relationship between IQ scores on the Otis-Lennon Mental Abilities Test, administered while subjects were in fifth to eighth grade, and GPA in ninth grade. Subject 1 IQ 102 GPA 2.75 108 4,00 109 118 2.25 3.00 1.67 2,25 2,50 79 6. 88 7 100 92 131 83 3.50 3.75 2.75 10 11 115 92 95 4.00 2,23 12 13 3.00 90 106 85 14 2.50 15 2.75 2.75 16 95 97 17 2.75 2.67 18 19 93 2,00 20 81 111 2,00 3.00 1.50 21 22 95 23 24 25 106 83 81 3.75 .67 1.50 26 112 85 115 3.00 27 1.75 28 3.75 29 30 86 1,00 85 2,50 Is IQ related to GPA? If a student's IQ is 117, what GPA would you predict? How much of the variation in GPA is explained by IQ? What can you conclude based upon the standard error of the estimate? Complete an APA, 3 part write-up for the linear regression worksheet.
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