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16 Cards in this Set
- Front
- Back
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Categorical Variable
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Number of occurences in each class or category of a variable (nominal)
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Continuous Variable
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Constant unit of measurement (interval and ratio)
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Independent Variable
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Stands alone, predicts or may cause a change in a dependent variable
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Dependent Variable
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Criterion variable, its value is subject to changes in the independent variable(s)
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Equation
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Dependent variable (Y)=Independent Variable (X)
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Technique: Cross Tabulation
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Dependent: Categorical
Independent: Categorical (m/f) Purpose: Assessment of a joint frequency distribution |
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Technique: T-Test
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Dependent: Continous (gpa)
Independent: Categorical Purpose: Differences in a single mean across 2 groups |
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Technique: ANOVA
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Dependent: Continuous (sales)
Independent: Categorical (3comp) Purpose: Differences in a single mean across multiple groups (>2) |
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Technique: Correlation
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Dependent: Continous
Independent: Continuous Purpose: Association between 2 variables |
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Technique: Regression
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Dependent: Continuous
Independent: Continuous Purpose: Influence of one or more independents on a single dependent |
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What measurement is used in correlation and regression?
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Interval or ratio
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What's another prupose of correlation?
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Cause and effect
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Technique: Cluster analysis
(Interdependence techinique) |
Variable: continuous
Purpose: Groups respondents into similar clusters for segmentation |
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Technique: Factor analysis
(Interdependence techinique) |
Variable: continuous
Purpose: Groups variables into similar factors |
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Purpose: Reliability
(Psychometric scale assessment-only performed on multi-item continuous variables) |
Decision Rule: Coefficient alpha>.70
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Purpose: Validity
(Psychometric scale assessment-only performed on multi-item continuous variables) |
Decision Rule: (1) All correlation coefficients significant (2) single component in factor analysis
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