whuber

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Consultant (environmental and spatial stats a specialty), expert witness, and teacher.


840 Answers

newest activity votes
76
Is $R^2$ useful or dangerous?
jul 20 '11 at 21:35
54
How would you explain covariance to someone who understands only the mean?
nov 10 '11 at 17:14
50
Essential data checking tests
jun 7 '11 at 14:30
46
Intuitive explanation of unit root
may 25 '12 at 4:22
44
What skills are required to perform large scale statistical analyses?
mar 6 '11 at 22:16
42
Look and you shall find (a correlation)
dec 26 '10 at 0:13
37
In linear regression, when is it appropriate to use the log of an independent variable instead of the actual values?
oct 12 '10 at 18:59
35
How to understand degrees of freedom?
oct 17 '11 at 20:26
35
Which pseudo-$R^2$ measure is the one to report for logistic regression (Cox & Snell or Nagelkerke)?
oct 13 '10 at 17:46
30
What is the probability that this person is female?
jun 21 '12 at 4:31
30
Excel as a statistics workbench
oct 7 '10 at 20:15
30
How can a regression be significant yet all predictors be non-significant?
aug 19 '11 at 22:49
29
Does it make sense to add a quadratic term but not the linear term to a model?
may 18 '12 at 15:20
29
Making sense of principal component analysis, eigenvectors & eigenvalues
sep 15 '10 at 21:33
28
What are the 'big problems' in statistics?
sep 6 '10 at 17:27
27
What intuitive explanation is there for the central limit theorem?
oct 22 '10 at 21:11
26
Should one remove highly correlated variables before doing PCA?
feb 21 at 22:00
26
A Probability distribution value exceeding 1 is OK?
nov 5 '10 at 2:32
25
Famous statistician quotes
nov 7 '10 at 22:41
24
Line graph has too many lines, is there a better solution?
dec 20 at 23:38
24
The Sleeping Beauty Paradox
oct 25 at 20:10
24
Why is median age a better statistic than mean age?
sep 10 '10 at 22:17
23
Most interesting statistical paradoxes
feb 28 '12 at 17:02
23
How to generate uniformly distributed points on the surface of the 3-d unit sphere?
mar 8 '11 at 0:30
23
If A and B are correlated with C, why are A and B not necessarily correlated?
dec 25 '10 at 23:54
22
The prestige magician paradox
oct 21 '11 at 15:11
22
Is it meaningful to test for normality with a very small sample size (e.g., n = 6)?
aug 8 '11 at 13:08
21
Are inconsistent estimators ever preferable?
jun 25 '12 at 20:05
21
Experimental evidence supporting Tufte-style visualizations?
nov 15 '11 at 20:49
21
Is there a boxplot variant for Poisson distributed data?
jul 15 '11 at 15:18
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