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dmartin's user avatar
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dmartin
  • Member for 9 years, 6 months
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482 votes
20 answers
170k views

The Two Cultures: statistics vs. machine learning?

  • 12.1k
432 votes
5 answers
164k views

How to understand the drawbacks of K-means

  • 6,537
373 votes
80 answers
177k views

What is your favorite "data analysis" cartoon?

  • 12.1k
278 votes
153 answers
145k views

Famous statistical quotations

  • 6,355
277 votes
6 answers
42k views

Is $R^2$ useful or dangerous?

  • 9,380
266 votes
3 answers
26k views

How to know that your machine learning problem is hopeless?

  • 120k
157 votes
1 answer
109k views

Crossed vs nested random effects: how do they differ and how are they specified correctly in lme4?

  • 3,164
139 votes
9 answers
58k views

Obtaining knowledge from a random forest

108 votes
4 answers
66k views

What is the difference between zero-inflated and hurdle models?

  • 1,318
106 votes
1 answer
66k views

Conditional inference trees vs traditional decision trees

  • 7,790
105 votes
5 answers
51k views

Diagnostic plots for count regression

  • 3,521
101 votes
13 answers
66k views

What is the best way to identify outliers in multivariate data?

  • 53.2k
99 votes
6 answers
34k views

Principled way of collapsing categorical variables with many levels?

  • 11.7k
98 votes
2 answers
13k views

How much do we know about p-hacking "in the wild"?

  • 21.3k
97 votes
6 answers
40k views

On the importance of the i.i.d. assumption in statistical learning

  • 1,376
95 votes
6 answers
8k views

Essential data checking tests

  • 5,553
79 votes
12 answers
9k views

Famous statistical wins and horror stories for teaching purposes

  • 13.7k
75 votes
16 answers
39k views

Practical thoughts on explanatory vs. predictive modeling

  • 171
73 votes
6 answers
67k views

Do the predictions of a Random Forest model have a prediction interval?

72 votes
3 answers
155k views

How to actually plot a sample tree from randomForest::getTree()? [closed]

  • 1,460
71 votes
3 answers
3k views

Is this the solution to the p-value problem?

  • 297k
57 votes
10 answers
4k views

What are some examples of anachronistic practices in statistics?

  • 3,070
53 votes
6 answers
35k views

How are propensity scores different from adding covariates in a regression, and when are they preferred to the latter?

53 votes
9 answers
3k views

Are all models useless? Is any exact model possible -- or useful?

  • 16.6k
46 votes
3 answers
59k views

Test for bimodal distribution

  • 643
44 votes
3 answers
56k views

Latent Class Analysis vs. Cluster Analysis - differences in inferences?

  • 475
43 votes
1 answer
20k views

Manually calculated $R^2$ doesn't match up with randomForest() $R^2$ for testing new data

42 votes
6 answers
35k views

What are best practices in identifying interaction effects?

41 votes
7 answers
18k views

How to deal with hierarchical / nested data in machine learning

  • 1,822
37 votes
3 answers
12k views

Is a "hurdle model" really one model? Or just two separate, sequential models?

  • 9,082