Correlational Research Designs

Organizing the Data Visually

Scatterplot

Organizing the Data Visually

Regression line

Linear relationship

Nonlinear relationships

Patterns of Relationships Between Two Variables

Independent

Patterns of Relationships Between Two Variables

Curvilinear relationships

Pearson product-moment correlation coefficient

The Pearson Correlation Coefficient

Correlation Matrix

The Chi-Square Statistic

Multiple regression

Correlation and Causality

Strengths/Weaknesses of Correlational Designs

Strengths

Strengths/Weaknesses of Correlational Designs

Weaknesses