Let X and Y be random variables with respective means x and y , respective variances 2 x and 2 y , and correlation coefficient Fit the line y a bx by the method of leastsquares to the probability distribution function by minimizing theexpectation with respect to a and b K (a,b) E (Y a bX) 2 They give a hint in the book to consider thepartial derivatives with respect to a and b separately and set themequal to 0 and solve simultaneously I did a little work butunsure if i did the partial derivatives correctly I will rate anyone that can give me a few ideas

Question: Let X and Y be random variables with respective means? x and ? y , respective variances? 2 x and? 2 y , and correlation

Let X and Y be random variables with respective means?_x and ?_y , respective variances?²_x and?²_y , and correlation coefficient?. Fit the line y = a + bx by the method of leastsquares to the probability distribution function by minimizing theexpectation with respect to a and b.

K (a,b) = E [(Y- a - bX)² ]

They give a hint in the book to consider thepartial derivatives with respect to a and b separately and set themequal to 0 and solve simultaneously. I did a little work butunsure if i did the partial derivatives correctly.
I will rate anyone that can give me a few ideas.

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