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PhD
  • Member for 13 years, 1 month
  • Last seen more than a week ago
285 votes
11 answers
168k views

How would you explain covariance to someone who understands only the mean?

243 votes
4 answers
373k views

When (and why) should you take the log of a distribution (of numbers)?

234 votes
5 answers
95k views

Which "mean" to use and when?

109 votes
13 answers
73k views

Understanding "variance" intuitively

88 votes
4 answers
14k views

What's so 'moment' about 'moments' of a probability distribution?

86 votes
5 answers
54k views

How exactly did statisticians agree to using (n-1) as the unbiased estimator for population variance without simulation?

63 votes
2 answers
109k views

How should one interpret the comparison of means from different sample sizes?

56 votes
8 answers
14k views

Is sampling relevant in the time of 'big data'?

50 votes
7 answers
7k views

Is Amazon's "average rating" misleading?

35 votes
3 answers
27k views

Why is the formula for standard error the way it is?

25 votes
5 answers
22k views

Now that I've rejected the null hypothesis what's next?

18 votes
1 answer
1k views

Do we really perform multivariate regression analysis with *million* coefficients/independent variables?

13 votes
8 answers
1k views

If correlation doesn't imply causality then what's the value of knowing the correlation between two variables?

9 votes
1 answer
3k views

How to understand the geometric intuition of the inner workings of neural networks?

8 votes
1 answer
556 views

What is the intuition behind (M)ANCOVA and when/why should one use it?

8 votes
4 answers
594 views

How representative is Poisson distribution of the distribution of events in reality?

7 votes
4 answers
12k views

Most suitable distributions for modeling Monte Carlo Simulations

5 votes
4 answers
13k views

How to compute the distribution of sums when rolling 'N' dice with 'M' faces?

5 votes
1 answer
437 views

How many times, in expectation, am I fetching a random sample from a predefined discrete probability distribution of elements?

4 votes
2 answers
5k views

Can anomaly detection work without the assumption of Normal Distribution of the underlying data?

4 votes
0 answers
37 views

What can I use to compute a similarity (or diversity) index for a sample with "multidimensional" attributes?

4 votes
1 answer
939 views

What are the recommended practices/techniques to compare "index" statistics?

3 votes
1 answer
73 views

Is a test of statistical significance necessary when the mean is "surely off the charts" in the experiment?

3 votes
0 answers
250 views

When designing experiments why is it necessary to have multiple groups run in parallel?

3 votes
1 answer
98 views

How to summarize a time series independent variable for regression?

3 votes
1 answer
570 views

Where did this risk exposure 'estimation-formula' come from?

3 votes
2 answers
2k views

How/Why does resampling from "any" distribution lead to a normal distribution?

3 votes
0 answers
106 views

If I take n-standard deviations of my data what would be my confidence level with the estimate?

2 votes
1 answer
277 views

Guessing the appropriate 'distribution' of an observation to perform some form of sensitivity analysis

2 votes
2 answers
513 views

What is the most appropriate test for a multi-year different group/yr experiment?