For Exercises use the same data as for the corresponding exercises in Section 10–1. For each exercise, find the equation of the regression line and find the y  value for the specified x value. Remember that no regression should be done when r is not significant.

There are many interesting relationships among the various nutrients found in fruits and vegetables. Listed below are the number of grams of carbohydrates and the number of kilocalories for a 100-gram sample of various raw foods.

Find the number of calories in 100 g of a fruit with 12 g of carbs.

There are many interesting relationships among the various nutrients found in fruits and vegetables. Listed below are the number of grams of carbohydrates and the number of kilocalories for a 100-gram sample of various raw foods. Is there a linear relationship between the variables?

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Carbs 15.25 16.55 11.10 13.01 14.13 15.11 kcal 59 72 43 55 56 59