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Chapter 18 Some Other (Important) Statistical Procedures You Should Know About
Part IVSignificantly Different:
Using Inferential Statistics
Multivariate Analysis of Variance (MANOVA)
Used when there is more than one dependent variable
Allows you to determine the best combination of dependent variables.Example: Adolescent Coping Scale
Five Subscales of interestEffects of Gender, Race and Grade for each of the
five scales
Repeated Measures Analysis of Variance
Participants are tested on a variable more than onceExample: Monthly spelling tests
Examining student performance over timeHow is this different from a dependent
samples t-test?Your scores on Quests 1-4
Analysis of Covariance
Allows you to equalize initial differences between groups
Especially useful when you want to “control” for a variable that might confound your results
Effects of study time and sleep on test results.What about prior abilities in the subject
matter?
Multiple Regression
You learned this in Chapter 15…
Used when you have more than one predictor variableThe BIG rules of multiple predictors…IVs should be correlated with the DVBUT IVs should not be correlated with each
other…you want “unique” contributions
Factor Analysis
Based on how well items are related to one anotherFactors
Each factor represents several variablesMore efficient means of representing data
that relate to each other on some theoretical construct
Path Analysis
Examines the direction of relationships between variablesCausality
Examines the direction and strength of relationships
Typically uses correlation coefficients to show the strengths of the relationships between the variables.