Posted by
D.R. Wahlgren on
Nov 29, 2006; 6:14pm
URL: http://spssx-discussion.165.s1.nabble.com/More-on-Repeated-Measures-tp1072284p1072286.html
Gang,
Since we're talking repeated measures...I just ran a simple 2-group
by 2-time repeated measures analysis in SPSS v13 Mac, defining the
syntax via the menus.
I wanted to obtain a chart that showed the means on my DV by group
and time--a typical type of chart with two lines (one line for each
group) in two different colors or suchforth, with a legend that
illustrated which line represents which group.
However, the chart that I got has the 4 data *points* representing
the 4 means, all in the same symbol (small open circles), and just
one line that doesn't actually connect any of the points but appears
to be connecting the average of the points at time 1 and the average
of the points at time 2.
My syntax came out as follows:
GLM
DV_time1 DV_time2 BY Group
/WSFACTOR = time 2 Polynomial
/METHOD = SSTYPE(3)
/PLOT = PROFILE( time*Group )
/EMMEANS = TABLES(Group*time)
/PRINT = DESCRIPTIVE ETASQ OPOWER HOMOGENEITY
/CRITERIA = ALPHA(.05)
/WSDESIGN = time
/DESIGN = Group .
Is there something wrong with the way that the plot is specified?
thanks,
Dennis
--
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Dennis R. Wahlgren, M.A.
Center for Behavioral Epidemiology and Community Health
San Diego State University
http://www.cbeach.org"Poets say science takes away from the beauty of the stars--mere
globs of gas atoms. Nothing is 'mere.' I too can see the stars on a
desert night, and feel them. But do I see less or more?"
--Richard Feynman