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### 16 Cards in this Set

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