Statistics of Behavioral Sciences Final Review With Correct Answers Graded A+
Population - The entire group of individuals a researcher wishes to study Sample - A subset of the population that is intended to represent, or stand in for the population Random Sampling - Each member of the population has an equal chance of being included in each level Sampling Error - The naturally occurring discrepancy, or error, that exists between a sample statistic and the corresponding population parameter *Increase sample size *Keep variability in each population relatively small Statistics - Numerical values that are based on data from the sample *Symbols are letters from the English alphabet Parameters - Numerical values that are based on the data from an entire population *Symbols for parameters are letters from the Greek alphabet Independent Variable - (X): The variable that is changed or manipulated by the researcher, or the variable we believe causes a change in the other variable Dependent Variable - (Y): The variable being observed or measured to assess the effect of the treatment Y in Regression analyses - (Y): The variable that is being predicted in Regression analysesPredictor Variable (x in regression analyses) - (X): The variable from which predictions are made in Regression analyses
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