Business Research Methods Capter 12 Essay

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CHAPTER 12 SUBJECTS: The sampling units for an experiment, usually human respondents who provide measures based on the experimental manipulation BLOCKING VARIABLES: A categorical (less than interval) variable that is not manipulated like an experimental variable but is included in the statistical analysis of experiments EXPERIMENTAL CONDITION: One of the possible levels of an experimental variable manipulation MAIN EFFECT: The experimental difference in dependent variable means between the different levels of any single experimental variable INTERACTION EFFECT: Differences in dependent variable means due to a specific combination of independent variables EXPERIMENTAL TREATMENT: The term referring to the way an experimental variable is manipulated CONTROL GROUP: A group of subjects to whom no experimental treatment is administrated CELL: Refers to a specific treatment combination associated with an experiment group REPEATED MEASURES: Experiments in which an individual subject is exposed to more than one level of an experimental treatment TEST UNITS: The subjects or entities whose responses to the experimental treatment are measured or observed SYSTEMATIC OR NONSAMPLING ERROR: Occurs if the sampling units in an experimental cell are somehow different than the units in another cell, and this difference affects the dependent variable RANDOMIZATION: The random assignment of subject and treatments to groups; it is one device for equally distributing the effects of extraneous variables to all conditions NUISANCE VARIABLES: Items that may affect the dependent measure but are not of primary interest CONFOUND: A confound means that there is an alternative explanation beyond the experimental variables for any observed differences in the dependent variable EXTRANEOUS VARIABLES: Variables that naturally exist in the environment that may have some systematic effect

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