Name four different graphs that show a summary of the data.
Unusual points Each of the four scatterplots that follow shows a cluster of points and one “stray” point. For each, answer these questions:
1) In what way is the point unusual? Does it have high leverage, a large residual, or both?
2) Do you think that point is an influential point?
3) If that point were removed, would the correlation be- come stronger or weaker? Explain.
4) If that point were removed, would the slope of the re- gression line increase or decrease? Explain
Make a scatterplot of the data. Use 87 for 1987
Make a scatterplot for the data.
Height and Weight of Females
State the slope and y-intercept of the equation.