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Differences between Groups and Relationships between Variables

Differences between Groups and Relationships between Variables. Chapter 15. Differences between Groups. Cross-Tabulation Chi-square Differences between 2 Groups when Comparing Means T-test Z-test Differences between 3+ Groups when comparing Means ANOVA. Relationships among Variables.

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Differences between Groups and Relationships between Variables

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  1. Differences between Groups and Relationships between Variables Chapter 15

  2. Differences between Groups • Cross-Tabulation • Chi-square • Differences between 2 Groups when Comparing Means • T-test • Z-test • Differences between 3+ Groups when comparing Means • ANOVA

  3. Relationships among Variables • Measure of Association • Correlation Analysis • Correlation coefficient (r) • Equation • Correlation and causation • Coefficient of • Correlation Matrix

  4. Relationships among Variables • Bivariate Linear Regression • Interval or Ratio Level Data • Y=a + βX • Calculating beta • Drawing the regression line

  5. Relationships among Variables • Multiple Regression Analysis • Sample problem • Y=102.18 + .387X1 + 115.2X2 + 6.73X3 • Coefficient of multiple determination

  6. Spearman Rank Correlation • Rank Order Data • Equation • Sample problems

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