Cross Validated by Kiwix

Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization

Most popular questions

706 Making sense of principal component analysis, eigenvectors & eigenvalues 2010-09-15T20:05:55.993

362 The Two Cultures: statistics vs. machine learning? 2010-07-19T19:14:44.080

354 What is the difference between "likelihood" and "probability"? 2010-09-14T03:24:01.207

337 Python as a statistics workbench 2010-08-12T10:46:45.407

333 Why square the difference instead of taking the absolute value in standard deviation? 2010-07-19T21:04:39.057

331 How to choose the number of hidden layers and nodes in a feedforward neural network? 2010-07-20T00:15:02.920

329 What is the intuition behind beta distribution? 2013-01-15T15:31:41.730

315 What is the difference between test set and validation set? 2011-11-28T11:05:15.103

304 What is your favorite "data analysis" cartoon? 2010-07-21T15:13:21.493

301 How to understand the drawbacks of K-means 2015-01-16T04:38:13.310

277 Bayesian and frequentist reasoning in plain English 2010-07-19T19:25:39.467

260 Explaining to laypeople why bootstrapping works 2012-04-08T21:04:57.557

248 Difference between logit and probit models 2012-01-03T07:20:22.240

237 Is normality testing 'essentially useless'? 2010-09-08T17:47:21.820

227 Famous statistical quotations 2010-07-27T06:20:38.880

215 Relationship between SVD and PCA. How to use SVD to perform PCA? 2015-01-20T23:47:22.433

213 What are common statistical sins? 2010-11-15T18:46:37.113

212 When conducting multiple regression, when should you center your predictor variables & when should you standardize them? 2012-06-04T16:32:19.153

211 Is $R^2$ useful or dangerous? 2011-07-20T20:32:55.510

211 How to understand degrees of freedom? 2011-10-12T20:16:52.280

204 How would you explain Markov Chain Monte Carlo (MCMC) to a layperson? 2010-07-19T23:21:05.320

199 What happens if the explanatory and response variables are sorted independently before regression? 2015-12-07T17:22:05.580

198 What is the meaning of p values and t values in statistical tests? 2010-07-19T19:28:44.903

197 Interpretation of R's lm() output 2010-12-04T11:28:14.300

190 What is the difference between fixed effect, random effect and mixed effect models? 2010-11-19T00:03:28.163

188 What's the difference between a confidence interval and a credible interval? 2010-09-01T13:53:07.183

188 Bagging, boosting and stacking in machine learning 2011-11-24T16:51:07.883

187 What is the difference between data mining, statistics, machine learning and AI? 2010-11-30T11:26:15.473

184 Why is Euclidean distance not a good metric in high dimensions? 2014-05-18T17:50:50.803

182 Why does a 95% Confidence Interval (CI) not imply a 95% chance of containing the mean? 2012-04-14T10:19:48.357

181 Is there any reason to prefer the AIC or BIC over the other? 2010-07-23T20:49:12.340

171 How to normalize data to 0-1 range? 2013-09-23T15:18:57.373

170 What are the differences between Factor Analysis and Principal Component Analysis? 2010-08-12T03:46:05.987

170 Which "mean" to use and when? 2012-02-19T19:43:26.040

168 What is a data scientist? 2016-02-11T08:44:20.053

167 How to know that your machine learning problem is hopeless? 2016-07-05T08:22:25.707

166 What is the best introductory Bayesian statistics textbook? 2010-07-19T21:18:12.713

160 How to summarize data by group in R? 2011-03-13T12:02:38.533

159 What does the hidden layer in a neural network compute? 2013-07-02T15:59:07.463

158 How should I transform non-negative data including zeros? 2010-08-09T13:57:51.753

153 How would you explain covariance to someone who understands only the mean? 2011-11-07T19:41:45.283

149 Algorithms for automatic model selection 2012-01-09T18:22:23.617

146 Does Julia have any hope of sticking in the statistical community? 2012-04-01T22:56:09.113

140 Statistics Jokes 2010-08-06T01:53:47.023

138 When should I use lasso vs ridge? 2010-07-28T01:10:18.423

133 In linear regression, when is it appropriate to use the log of an independent variable instead of the actual values? 2010-07-20T13:11:50.297

133 Why the sudden fascination with tensors? 2016-02-23T09:38:31.690

132 Is Facebook coming to an end? 2014-01-23T16:58:42.883

132 What does AUC stand for and what is it? 2015-01-09T10:35:35.967

130 How to interpret a QQ plot 2014-06-05T10:44:37.823

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