Christine,
Not knowing more about your research, or whether the analysis is appropriate
for the data you are looking at, the first difference indicates that the
mean score for the Spring of 2004 (J) is nine-tenths of a point higher than
the mean score for the Fall of 2003 (I); and (the second difference) that
the mean score for the Fall of 2004 (J) is .85 of a point higher than that
of the Fall of 2003 (I) - which also tells us that the score for the Fall of
2004 is smaller than that of Spring of the same year.
The two differences (-.9, and -.85) are statistically significant at the .05
significance level (alpha).
Good luck.
Dominic Lusinchi
Statistician
Far West Research
Statistical Consulting
San Francisco, California
415-664-3032
www.farwestresearch.com
-----Original Message-----
From: SPSSX(r) Discussion [mailto:
[hidden email]] On Behalf Of C.
Salmon
Sent: Wednesday, October 18, 2006 6:53 PM
To:
[hidden email]
Subject: Question about interpreting Tukey HSD table
Please forgive me if this is a silly question, but I can't find the
answer anywhere in my notes or texts from the two stats classes I took
long ago!
I have the following Tukey HSD table for a question from a course
evaluation. The question is, does the negative value in the Mean
Difference column mean anything? Does it indicate the direction of the
change? What would be my interpretation of this table in narrative
form?
Post-hoc Test Tukey's HSD for
Question 16, "The faculty member intellectually students."
I J Mean difference (I-J) Significance
Fall 2003 Spring 2004 -.900
.020*
Fall 2004 -.850
.046*
* The mean difference is significant at the .05 level.
Thanks so much, Christine
"desperately finishing the dissertation"
Locked
Oct 19, 2006; 2:53am
