Demand for the Basic Computer Operations class has increased steadily for several years as seen in the following table. Use the data below to develop a regression equation and determine the predicted number of students for year 7:

Year (X) Students (Y) XY X² Y²

^{1 32 32 1 1,024}

^{2 36 72 4 1,296}

^{3 37 111 9 1,369}

^{4 40 160 16 1,600}

^{5 42 210 25 1,764}

^{6 47 282 36 2,209}

^{__________________________________________________________________________________________________________________________}

SX = 21 SY =234 SXY = 867 SX² = 91 SY²= 9,262

_______________________________________________________________________________________________

Average (X) = 3.5 Average (Y) = 39

a. What is “b”?

b. What is “a”?

c. Using the “a” and “b” you already calculated, what is the regression equation? Y-hat equals ______.

d.

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