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ml-recall

#sufficient-statistics

1 question from Linear Models & Regularization

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Question 1: Short answer

mediumAI-checkedLinear Models & Regularization

You cannot see a dataset, only these statistics of it: xˉ=1\bar x = 1, yˉ=4\bar y = 4, Cxx=1n∑i(xi−xˉ)2=2C_{xx} = \frac1n\sum_i (x_i - \bar x)^2 = 2, Cxy=1n∑i(xi−xˉ)(yi−yˉ)=3C_{xy} = \frac1n\sum_i (x_i - \bar x)(y_i - \bar y) = 3 and Cyy=1n∑i(yi−yˉ)2=10C_{yy} = \frac1n\sum_i (y_i - \bar y)^2 = 10. What is the intercept w0∗w_0^* of the least-squares line y=w0+w1xy = w_0 + w_1 x?

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