The file lists the calorics and sugar, in grams, in one serving of seven breakfast cereals:

a. Compute the covariance.
b. Compute the coefficient of correlation.
c. Which do you think is more valuable in expressing the relationship between calories and sugar-the covariance or the coefficient of correlation? Explain.
d. Based on (a) and (b), what conclusions can you reach about the relationship between calories and sugar?