1. In a study among Graduate Education students, forty-six (12 freshmen, 11 sophomores, 10 juniors, and 13 seniors) were asked to report their GPA to one decimal point. The researcher wanted to determine if there are significant differences on the GPA among the four groups of students. The following is the output of the statistical analysis. SUMMARY Groups Count Sum Average Variance 12 24.8 2.066667 0.300606 Sophomores 11 21.1 1.918182 0.209636 Juniors 10 20.3 2.03 0.133444 Seniors 13 25.9 1.992308 0.114103 Source of Variation SS of MS P-value Between 0.136522 0.045507 0.239714 0.868148 Groups Within Groups 7.973261 42 0.18984 Total 8.109783 45 a.) What statistical tool is used? b.) State the null hypothesis c.) what group of students perform the most? The least?
1. In a study among Graduate Education students, forty-six (12 freshmen, 11 sophomores, 10 juniors, and 13 seniors) were asked to report their GPA to one decimal point. The researcher wanted to determine if there are significant differences on the GPA among the four groups of students. The following is the output of the statistical analysis. SUMMARY Groups Count Sum Average Variance 12 24.8 2.066667 0.300606 Sophomores 11 21.1 1.918182 0.209636 Juniors 10 20.3 2.03 0.133444 Seniors 13 25.9 1.992308 0.114103 Source of Variation SS of MS P-value Between 0.136522 0.045507 0.239714 0.868148 Groups Within Groups 7.973261 42 0.18984 Total 8.109783 45 a.) What statistical tool is used? b.) State the null hypothesis c.) what group of students perform the most? The least?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Transcribed Image Text:1. In a study among Graduate Education students, forty-six (12 freshmen, 11 sophomores, 10 juniors,
and 13 seniors) were asked to report their GPA to one decimal point. The researcher wanted to
determine if there are significant differences on the GPA among the four groups of students. The
following is the output of the statistical analysis.
SUMMARY
Groups
Count
Sum
Average
Variance
12
24.8
2.066667
0.300606
Sophomores
11
21.1
1.918182
0.209636
Juniors
10
20.3
2.03
0.133444
Seniors
13
25.9
1.992308
0.114103
Source of
Variation
S
of
MS
P-value
Between
0.136522
3
0.045507
0.239714
0.868148
Groups
Within Groups
7.973261
42
0.18984
Total
8.109783
45
a.) What statistical tool is used?
b.) State the null hypothesis
c.) what group of students perform the most? The least?
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