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คิดเล่นๆ

31 archived articles filed under คิดเล่นๆ.

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คิดเล่นๆ1 min read

Archived note

2. As George Box famously noted: “…the statistician knows…that in nature there never was a normal distribution, there never was a straight line, yet with normal and linear assumptions, known to be false, he can often derive…

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คิดเล่นๆ2 min read

Archived note

The collinearity problem in regression arises when at least one linear function of the independent variables is very nearly equal to zero. (Techni- cally, a set of vectors is collinear when a linear function is exactly equal to…

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