Contact your instructor, and let them know that you are
having problems with an assignment. Most instructors have
office hours, where you can discuss problems like this.
- Phil Spector
Statistical Computing Facility
Department of Statistics
UC Berkeley
spec...@stat.berkeley.edu
On Fri, 5 Mar 2010, SquareAce wrote:
Can someone get me going in the right direction with this test question? We
have went as far as t.test in our class, but not to power or anova yet. I
have pasted the question and a summary of the dataset "gpa".
5. Given that all the GPA data in this dataset is comprised of means, would
you expect the underlying dataset of students’ individual GPA to be more
variable or less variable than this dataset as measured by the variance?
Explain. (5 points)
here is the summary of gpa:
summary(gpa)
school GPA gender classification semester
Business :32 Min. :2.200 f:80 fresh :40 fa04:40
Education:32 1st Qu.:2.590 m:80 junior:40 fa05:40
Liberal :32 Median :2.790 senior:40 sp05:40
Nursing :32 Mean :2.775 soph :40 su05:40
Sciences :32 3rd Qu.:2.922
Max. :3.640
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