Question Details

1.      Correlation only applies to what type(s) of relationship(s)?

2.      Is correlation resistant to outliers?

3.      Does a high correlation indicate a strong cause-effect relationship?

4.      Sketch a scatterplot with a correlation of about 0.8.

5.      Sketch a scatterplot with a correlation of about –0.5.

6.      Find the least-squares regression line (LSRL) for the calories-sodium data.

7.      Draw the LSRL on your scatterplot.

8.      What is the slope of this line, and what does it tell you in this context?

9.      What is the y-intercept of this line, and what does it tell you in this context?

10.  Predict the amount of sodium in a hot dog with 155 calories.