EC255 Study Guide - Final Guide: Null Hypothesis, Analysis Of Variance, Design Of Experiments

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12 Feb 2018
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Experimental design - plan and a structure to test hypotheses in which the researcher either controls or manipulates one or more variables; contains independent and dependent variables. Independent (aka factors) - may be either a treatment variable or a classification variable. Treatment variable - experimenter controls or modifies in the experiment, ex. Classification variable - some characteristic of the experimental subject that was present prior to the experiment and is not a result of the experimenter"s manipulations or control, ex. Managers might also decide to compare sales on the five different weekdays (monday through friday). In this study, the independent variables are store demographics and day of the week. Levels (classifications) - each independent variable has 2+ levels; subcategories of the independent variable used by the researcher in the experimental design. Dependent variable - response to the different levels of the independent variables.

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