How can it be that almost all the variance is explained by the first PC?
6316
PCA on correlation or covariance?
94136
Why is variance squared?
17107
Existence of the moment generating function and variance
104875
what is the variance of a constant matrix times a random vector?
40501
Why are these two random variables identically distributed?
43277
Confused by (apparent) inconsistent precision
80801
Why does the variance of the Random walk increase?
65259
Variance of Normal Order Statistics
49454
Minimum and Maximum values of variance
39171
Explanation of statistical simulation
132832
Why is it that when you add normally distributed random variables the variance gets larger but in the Central Limit Theorem it gets smaller?
34955
Is there a name or reference in a published journal/book for the following variance formula?
116797
How do I compute/estimate the variance of sequential data?
131026
Covariance and independence?
48618
Why is there a difference between a population variance and a sample variance
98697
What's the difference between variance and standard deviation?
153720
Intuitive explanation of entropy