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Psychology 242
Research in Psychology
Dr. David J. McKirnan

Week 11, Basic Statistics:
Scales, distributions, variance, the normal distribution .

Lecture notes

Key topics: Critical ratio

Scale values & Z scores

Understand all the italicized terms: they will be crucial to the entire statistics section.
The properties of the normal distribution in particular are central to this section.

The lecture notes are here.






Suggested background reading: Your basic statistics chapter(s).

Focus Modules:
Introduction to statistics.
Z and the Normal Distribution.
Testing hypotheses; the critical ratio.

For lecture & Discussion Group:

  • Read the articles / media cited below for discussion group.
  • Listen to the NYC RadioLab PodCast about operationally defining death.
  • Chapter 4 (or the basic statistics chapter) of your text.

    Other readings: politics and statistics, political uses of science, fraud in education tracking.

    Discussion Group

    These are the data you will be using for your paper. You can make up data if you like - or use real data - but keep it as simple as this.

    Get a jump on the t-test you have due for next week (and to complete your paper) by going to the assignment for next week and begin working on it now.

    Take these data and follow the instructions for this week.

    Basic frequency distributions.

    Simple score distribution

    Grouping distribution