Yxcas's answer to .'s Junior College 2 H2 Maths Singapore question.
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Should be something like this…
Date Posted:
4 months ago
Refer to MF26/27 and use the regression line gradient formula to form an equation, simplifying to k1 - k2 = 20 -- (1)
Then use the fact that (x-bar, y-bar) lies on the regression line to form another equation, simplifying to k1 + k2 = 390 -- (2)
Solving simultaneously, k1 = 205 and k2 = 185.
Thank you.
Then use the fact that (x-bar, y-bar) lies on the regression line to form another equation, simplifying to k1 + k2 = 390 -- (2)
Solving simultaneously, k1 = 205 and k2 = 185.
Thank you.
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