Question 3: Derive the expression for the following estimator which minimizes the squared sum of errors. That is, we choose a such that: N â = argmina (y₁ - ax;) ² HINT: Let, N f(a) = /[(y₁ - ax;) ² i=1 Find the derivative first, then find the value of a

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A: Since you have asked multiple question, we will solve the first question for you. If you want any…