Regression analysis is being used to find the line of best fit (vy =a+t bx)

from five pairs of data. The calculations have produced the following information:

Sx = 129 Sy = 890 Sxy = 23091 dx? = 3433 dy? = 29929 What is the value of ‘a’ in the equation for the line of best fit (to the nearest whole number)?

(a) 146

(b) 152

(c) 210

(d) 245

(2 marks)

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