A researcher is interested in testing the effectiveness of a new
approach to leading discussion groups in his classes. He assigns all the
females in one of his classes to use the new discussion method and all the
males to use the old discussion method.
Research Stats Lecture 3
Measurement and Variables
The Psychological Experiment:
Definition of the psychological experiment
o Objective observation
o Of phenomenon that are made to occur
o In a strictly controlled situation in which one or mor
Research Stats: Lecture 2 (08-25-16)
What are primary and secondary sources?
A primary source is a study actually authored by that person or group of people
o The data collected in the study, the interpretations, and conclusions about th
A frequency distribution is a distribution in which the values of the dependent variable are
tabled or plotted against their frequency of occurrence. Can be displayed using a histogram.
Guidelines for Plotting Data: Supply a main title; Always label the
Characteristics of a Normal Distribution: (1)Mean, median, and mode are all located at the 50 th percentile; (2)Normal distribution is
symmetrical; (3)Total area under the curve is equal to 1.0 (area under the curve varies between 0 and 1 and can never be