Ryan
Reputation
1,065
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4 12 10
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### Questions (4)

 124 What is the importance of eigenvalues/eigenvectors? 49 Why is the eigenvector of a covariance matrix equal to a principal component? 5 Average wait time arriving at subway randomly 1 What is the characteristic formula for the addition of two lognormal distributions?

### Reputation (1,065)

 +558 What is the importance of eigenvalues/eigenvectors? +220 Why is the eigenvector of a covariance matrix equal to a principal component? +30 Prove that if $\gcd( a, b ) = 1$ then $\gcd( ac, b ) = \gcd( c, b )$

 6 Prove that if $\gcd( a, b ) = 1$ then $\gcd( ac, b ) = \gcd( c, b )$

### Tags (8)

 6 elementary-number-theory 0 correlation 0 linear-algebra × 2 0 probability 0 eigenvalues-eigenvectors × 2 0 probability-distributions 0 statistics × 2 0 soft-question

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