Scatterplots, direction-form-strength, the correlation coefficient r and the coefficient of determination

What this note covers

1. When a scatterplot is the right display
2. Constructing the plot: axes, scales and the explanatory variable
3. Describing an association: direction, form and strength
4. The correlation coefficient r: what it measures
5. Turning a value of r into words
6. The coefficient of determination and explained variation
7. Reading r and the coefficient of determination together
8. How this is examined in the WACE paper

8 sections · 12 key terms & formulas · 6 common mistakes