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The coefficients a and b of the line y = ax + b for the least squares fit of the n points (xi , yi)

The coefficients a and b of the line y = ax + b for the least squares fit of the n points (xi , yi) satisfy

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Exercise 1: Express the cost to compute a and b as O(f(n)), for some function f. Justify your formula for f(n)

i=1 2

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