Question: SOURCE: ADAPTED FROM ACCA PAPER 1.2 Regression analysis is being used to nd the line of best t (y = a + bx) from ve


SOURCE: ADAPTED FROM ACCA PAPER 1.2 Regression analysis is being used to nd the line of best t (y = a +

bx) from ve pairs of data. The calculations have produced the following information:

sum(x) = 129 sum(y) = 890 sum(xy) = 23,091 sum(x 2

) = 3,433 sum(y 2

) = 29,929 What is the value of a in the equation for the line of best t (to the nearest whole number)?

146 152 210 245

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