chapter  5
Data-Analytic Strategies Using Multiple Regression/Correlation
Pages 42

Untilthispointwehavepresentedregression/correlationanalysisasifthetypicalinvestigation proceededbyselectingasinglesetofIVsandproducingasingleregressionequationthatis thenusedtosummarizethefindings.Life,however,isseldomsosimplefortheresearcher. Thecoefficientorsetofcoefficientsthatprovidetheanswersdependcriticallyonthequestions beingasked.Thereisawealthofinformationabouttheinterrelationshipsamongthevariables notextractablefromasingleequation.Itis,perhaps,theskillwithwhichotherpertinent informationcanbeferretedoutthatdistinguishestheexpertdataanalystfromthenovice.In thischapterweaddressfivemajorissuesofstrategythatshouldbeconsideredinusingMRC analysis.Thefirstexaminesthefitbetweentheresearchquestionsandthecoefficientsthat answerthem.Thesecondexaminessomeoptionsandconsiderationsformakingregression coefficientsmoresubstantivelyinterpretable.Thethirdstrategicconsiderationistheuseof sequentialorhierarchicalanalysistowrestthebestavailableanswersfromthedata.Thefourth istheemploymentofsetsofindependentvariablesinhierarchicalanalyses.Thefinalsection discussesstrategiesforcontrollingandbalancingTypeIandTypeIIerrorsofinferenceinMRC.