Regression Analysis - Linear Regression - NCERT, ISC, ICSE, CBSE, CA, GCSE, IGCSE, IB - Example #14

From the data of 20 pairs of observation on
X and Y, following results are obtained.
X̅ = 199, Y̅ = 94,
Σ(X-X̅)² = 1200, Σ(Y-Y̅)² = 300,
Σ(X-X̅)(Y-Y̅)= -250
Find
i) The line of regression of Y on X.
ii) The line of regression of X on Y.
iii) Correlation coefficient between X
and Y

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