The computer-science aptitude score x and the achievement, Ask an Expert

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The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The results were as follows. (Give your answers correct to two decimal places.)

x 7 10 13 13 12 6 21 17 7 13

y 28 20 18 19 23 18 23 18 17 31

(a) Find the equation of the line of best fit. y hat = + x

(b) Find se2.

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