PSYC 515 SPSS M2 1
ANOVA SPSS W IORKSHEET NSTRUCTIONS
OVERVIEW
This worksheet is designed to assess your ability to perform, interpret, report, and graphically present
randomized and repeated measures ANOVAs. These are standard tests in our field and are foundational to the
more sophisticated research designs. Knowledge of these tests provide fundamental skills to critically
evaluating and producing research in one’s field.
INSTRUCTIONS
Be sure you have reviewed this module’s assigned readings and presentations before completing this
assignment. This assignment is worth 50 points. Each question is worth 3 content points except where otherwise
indicated (results write-ups are 5 pts each- 45 content points total). Five (5) points are assigned to general
formatting. This includes using ensuring the homework is completed and submitted according to the
instructions, SPSS output and images are legible and relevant, and that basic college level writing skills (e.g.,
grammar) are used in the write-ups. Answers should be placed where indicated (e.g., “ANSWER”). Note: all
questions must be attempted to be eligible for full credit of “format” points.
Please note that for all problems in this course, the standard cut-off (alpha) for a test of significance will
be .05, and you always report the exact power unless SPSS output states =.000 (you’d report <.001). p p
Also, remember that we divide the -value in half when reporting one-tailed tests with 1 – 2 groups. Also – p
remember to check your graphs! You often have to ADD the y – axis title.
Sample sizes may be smaller than acceptable for publication purposes – this is to ease the burden on you for
data entry, as the goal is to assess your ability to compute and interpret various statistical tests.
Submit the file as a WORD document (.doc or .docx). Make sure the filename of your submission includes
your full name, course and section.
oExample: SPSS2_JohnDoe_515B01
S 1
A psychologist at a private mental health facility was asked to determine whether there was a clear difference
in the length of stay for patients with different categories of diagnosis. Looking at the last seven patients in
each of the three major categories, the results (in terms of weeks of stay) were as follows.CUsing the data
