Question: Body mass and metabolic rate. Exercise (b) gives data on the lean body mass and metabolic rate for 12 women and 7 men.

1. Using the scatter plot you constructed for the previous exercise do you think the correlation will be about the same for men and women or quite different for the two groups? Why?
2. Calculate r for women alone and also for men alone. (Use the data analysis function in Excel for this calculation or a calculator that has a regression function)
3. Calculate the mean body mass for the women and for the men. Does the fact that the men are heavier than the women on the average influence the correlations? If so, in what way?

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