Calculate slope and intercept of least-squares line

Reference no: EM13145189

An article gave a scatterplot, along with the least-squares line for x = rainfall volume (in cubic meters) and y = runoff volume (in cubic meters), for a particular location. The following data were read from the plot in the paper:

x 8 15 17 20 26 33 43 50 58 70 75 84 99 115 130
y 6 12 15 17 17 27 29 48 40 48 55 72 84 101 102

(a) Calculate the slope and intercept of the least-squares line. (Give the answer to three decimal places.)

(b) Compute an estimate of the average runoff volume when rainfall volume is 75. (Give the answer to two decimal places.)

Reference no: EM13145189

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