The data set provided by NADMO shows the number of yearly values of flood damage relief items represented by y and the annual rainfall (in centimeters) represented by x over a period of 10 years.

(a) Find the standard deviations of x and y.

(b)Find the equation of the least-squares regression line, assuming that the value of the relief

items for flood damage depending on the amount of rainfall.

(c) Calculate the correlation coefficient using the NADMO data and comment on the result

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