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Suppose a hospital tested the age and body fat data for 18 randomly selected adults with the following


(a) Calculate the mean, median, mode and standard deviation of age and %fat.

(b) Draw the boxplots for age and %fat.

(c) Draw a scatter plot and a quantile-quantile plot based on these two variables.

(d) Normalize the two variables based on z-score normalization.

     (e) Calculate the covariance and correlation coefficient (Person's product moment   coefficient). Are these two variables positively or negatively correlated?

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