PSY 3096 Lecture Notes - Lecture 1: Type I And Type Ii Errors, Abscissa And Ordinate, Line Graph
20 Oct 2016
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Unit 4 part 2: a-b design, the a-b-a, design, the a-b-a-b design. Impossible, undesirable, unethical to reverse a treatment in learning has occurred: extraneous variables. Extraneous variables are variables that may unintentionally operate to influence the dependent variable: non-equivalent groups. 2 or more groups that are randomly assigned. A comparison group is compared to 1 or more treatment groups: solomon-four-group design-its advantages and disadvantages. Same as pre-test/post-test design except that there are 2 additional groups. No statistical test to treat all 6 sets of data: histogram is, a frequency polygon, line graph. Histogram: a graph in which the frequency for each category of a quantitative variable is represented as a vertical column that touches the adjacent column. Frequency polygon: a graph that is constructed by placing a dot in the center of each bar of a histogram and then connecting the dots. Line graph: a graph that is frequently used to depict the result of an experiment.
