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Solve the following.
For the lines of regression and , find the mean of ‘ ’ and the mean of ‘ ’.
For the lines of regression $4x - 2y = 4$ and $2x - 3y + 6 = 0$, find the mean of ‘$x$’ and the mean of ‘$y$’.
Answer
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From ISC 2020 Mathematics Paper 1, question 19(c).
Check your working with the Regression lines calculator: both regression lines, b_yx, b_xy and r from data, summary sums or the two lines; with estimates.