Help for the final (PSY 365)

2009 June 4
by Christopher H. Ramey, Ph.D.

QuestionsspssPlease feel free to post any questions you have as you approach your final exam here.

Questions can be conceptual or applied (e.g., SPSS).

We will do our best to answer in a timely fashion, but feel free, as well, to help each other out by hitting REPLY. Sometimes a good student-translation of a professor or TA’s point makes all the difference.

from → statistics

3 Responses
  1. 2009 June 10
    Antonio Vetrano permalink

    Looking over one of my homeworks for univariate ANOVA’s, I saw that I lost points for not reporting the means collapsed across effects and in a different homework I lost points for reporting the standard error that correspond to the means collapsed across effects. Do I report means collapsed across effects and standard deviations from the descriptives section?

    • 2009 June 10
      Christopher H. Ramey, Ph.D. permalink

      ok, so we’re dealing with good old factorial ANOVAs.

      means and standard deviations are generally reported as descriptive statistics for levels of an independent variable. when you want Ms and SDs collapsed across another independent variable, you will want to do the following (taken from a previous blog post, adapted):

      Once you are in the Univariate dialogue window and in “Options” select all the possibilities and move them into “Display Means”. Pick Descriptives. That will provide you with a table that includes means and standard deviations. Look at at “Total” for each Independent variable, and that gives you the mean and SD for main effects collapsed across levels of the other independent variable.

      Your output will also include a total descriptives table, as well as tables for 1. Grand Mean 2. IV #1 (a main effect) 3. IV #2 (a main effect) and 4. the Interaction.

      hope that helps!

      (always good to check the homeworks to see what you’ve missed and learn from that.)

  2. 2009 June 10
    Antonio Vetrano permalink

    I lost all of my notes on chi square and I was wondering if there was anyway you could email me the slides? I know this is last minute but I anticipated having three hours to study chi square would be sufficient for the final.

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