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George
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12 votes
2 answers
1k views

What is meant by the variance of *functions* in *Introduction to Statistical Learning*?

9 votes
1 answer
162 views

What is the relationship between the function $\mathbb{E}(Y \mid X = x)$ and linear regression?

7 votes
1 answer
129 views

Why must linear regressions only generate linear functions that resemble "lines or planes" (*Introduction to Statistical Learning* question)?

7 votes
3 answers
2k views

Is Simpson's Paradox always an example of confounding?

5 votes
1 answer
216 views

What is the domain of this random variable?

3 votes
2 answers
165 views

Are there ways in which perfect correlation (i.e., $\text{Cov}(X,Y) = 1$) can still be a deceiving statistic?

2 votes
1 answer
66 views

Is it true that $\frac{E[(|X - E[X]|)(|Y - E[Y]|)]}{\sigma_X \sigma_Y} = 1$?

2 votes
1 answer
80 views

Why are these two samples correlated with each other (ISLR package)?

2 votes
1 answer
403 views

Questions regarding the Bayes Classifier in *Introduction to Statistical Learning*

0 votes
0 answers
46 views

Justifying an early equation from *Introduction to Statistical Learning* [duplicate]