Harris and Steudel (2002) studied factors that might be associated with the jumping performance of domestic cats. They studied 18 cats, using takeoff velocity (in centimeters per second) as the response variable. They used body mass (in grams), hind limb length (in centimeters), muscle mass (in grams), and percent body fat in addition to sex as potential explanatory variables. The data can be found in the CatJumping data file. A scatterplot of takeoff velocity vs. body mass is shown in the figure for Exercise 10.3.15.
a. Describe the association between these variables.
b. Use the Corr/Regression applet to determine the equation of the least squares line for predicting a cat€™s take off velocity from its mass.
c. Interpret the value of the slope coefficient in this context.
d. Interpret the value of the intercept coefficient. Is this a context in which the intercept coefficient is meaningful?
e. Determine the proportion of variability in take off velocity that is explained by the least squares line with mass.

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