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we know that, if Y=a+bX :
b=Y_mean - slope*X_mean
So:
Eq1=> X=5/4Y-30/3 => -30/4 = X_mean-5/4Y_mean
Eq2=>Y=20/9X-107/9=> -107/9 =Y_mean-20/9X_Mean
Solve system of Two equations: 33=5Y_mean-4X_mean 107=20X_mean-9Ymean
X=13 , Y=17
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Correlation and Regression Lines - #3
You are viewing a single comment's thread. Return to all comments →
we know that, if Y=a+bX :
b=Y_mean - slope*X_mean
So:
Eq1=> X=5/4Y-30/3 => -30/4 = X_mean-5/4Y_mean
Eq2=>Y=20/9X-107/9=> -107/9 =Y_mean-20/9X_Mean
Solve system of Two equations: 33=5Y_mean-4X_mean 107=20X_mean-9Ymean
X=13 , Y=17