Great Question - Badge - Cross Validated

Great Question

Question score of 100 or more. This badge can be awarded multiple times.

Awarded 228 times.

Kendall Tau or Spearman's rho?

Awarded Nov 23 at 0:04

Tal Galili

21.1k35 gold badges140 silver badges205 bronze badges

What is a complete list of the usual assumptions for linear regression?

Awarded Nov 17 at 13:11

tony

1,0093 gold badges8 silver badges3 bronze badges

How to 'sum' a standard deviation?

Awarded Oct 5 at 13:03

klonq

1,2673 gold badges10 silver badges9 bronze badges

Calculating the parameters of a Beta distribution using the mean and variance

Awarded Sep 6 at 11:40

Dave Kincaid

1,6582 gold badges14 silver badges18 bronze badges

What is the difference between Cross-entropy and KL divergence?

Awarded Jun 23 at 9:49

maso

1,3092 gold badges8 silver badges10 bronze badges

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

Awarded May 21 at 21:49

Silverfish

22.9k27 gold badges101 silver badges199 bronze badges

How to calculate Area Under the Curve (AUC), or the c-statistic, by hand

Awarded May 2 at 14:49

Matt Reichenbach

3,5847 gold badges27 silver badges44 bronze badges

Are there any examples where Bayesian credible intervals are obviously inferior to frequentist confidence intervals

Awarded May 2 at 11:00

Dikran Marsupial

53.2k9 gold badges136 silver badges199 bronze badges

When is unbalanced data really a problem in Machine Learning?

Awarded Apr 1 at 13:27

Tim♦

135k25 gold badges250 silver badges487 bronze badges

Are unbalanced datasets problematic, and (how) does oversampling (purport to) help?

Awarded Mar 29 at 16:17

Stephan Kolassa

117k18 gold badges232 silver badges445 bronze badges

What is the best way to remember the difference between sensitivity, specificity, precision, accuracy, and recall?

Awarded Mar 9 at 13:37

Jessica

2,0413 gold badges17 silver badges17 bronze badges

What is the reason that a likelihood function is not a pdf?

Awarded Feb 1 at 22:04

John Doe

1,5363 gold badges16 silver badges25 bronze badges

Subscript notation in expectations

Awarded Jan 4 at 20:45

Emile

3,4403 gold badges22 silver badges18 bronze badges

What is meant by a "random variable"?

Awarded Jan 2 at 12:26

Baltimark

2,2184 gold badges20 silver badges20 bronze badges

Relationship between poisson and exponential distribution

Awarded Nov 24, 2022 at 20:27

user862

2,7098 gold badges29 silver badges24 bronze badges

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

Awarded Nov 18, 2022 at 1:00

Quantuple

1,5263 gold badges10 silver badges20 bronze badges

Loadings vs eigenvectors in PCA: when to use one or another?

Awarded Nov 17, 2022 at 10:11

user2696565

1,3793 gold badges11 silver badges14 bronze badges

What is the difference between a multiclass and a multilabel problem?

Awarded Nov 7, 2022 at 20:24

Learner

4,40712 gold badges39 silver badges39 bronze badges

Convergence in probability vs. almost sure convergence

Awarded Nov 2, 2022 at 19:16

raegtin

9,58014 gold badges52 silver badges55 bronze badges

Principled way of collapsing categorical variables with many levels?

Awarded Nov 1, 2022 at 17:21

shadowtalker

12k4 gold badges53 silver badges118 bronze badges

If mean is so sensitive, why use it in the first place?

Awarded Oct 18, 2022 at 1:05

Legend

4,4529 gold badges42 silver badges52 bronze badges

Interpreting plot.lm()

Awarded Sep 18, 2022 at 13:27

Guest

1,0213 gold badges8 silver badges3 bronze badges

The Book of Why by Judea Pearl: Why is he bashing statistics?

Awarded Sep 18, 2022 at 13:27

January

7,4792 gold badges35 silver badges59 bronze badges

How does the correlation coefficient differ from regression slope?

Awarded Sep 18, 2022 at 13:27

luciano

13.9k34 gold badges95 silver badges125 bronze badges

Solving for regression parameters in closed-form vs gradient descent

Awarded Sep 18, 2022 at 13:27

Jeff

3,6556 gold badges29 silver badges39 bronze badges

Is there a way to remember the definitions of Type I and Type II Errors?

Awarded Sep 18, 2022 at 13:27

Thomas Owens

1,1012 gold badges11 silver badges19 bronze badges

Correlation between a nominal (IV) and a continuous (DV) variable

Awarded Aug 16, 2022 at 13:42

Paul Miller

1,0813 gold badges8 silver badges3 bronze badges

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

Awarded Aug 8, 2022 at 22:40

Rob Hyndman

55.8k28 gold badges144 silver badges195 bronze badges

Generate a random variable with a defined correlation to an existing variable(s)

Awarded Jul 25, 2022 at 21:05

Felix S

4,6505 gold badges30 silver badges36 bronze badges

Understanding "variance" intuitively

Awarded Jul 2, 2022 at 12:30

PhD

14.5k21 gold badges48 silver badges47 bronze badges

Does the variance of a sum equal the sum of the variances?

Awarded May 31, 2022 at 10:55

Abe

3,8019 gold badges29 silver badges45 bronze badges

What is an ablation study? And is there a systematic way to perform it?

Awarded May 28, 2022 at 11:11

cgo

8,73712 gold badges44 silver badges68 bronze badges

What is the benefit of breaking up a continuous predictor variable?

Awarded May 6, 2022 at 12:18

Tom

1,7112 gold badges13 silver badges18 bronze badges

What is the relation between k-means clustering and PCA?

Awarded Apr 12, 2022 at 22:52

mic

4,2784 gold badges25 silver badges41 bronze badges

Mean absolute error OR root mean squared error?

Awarded Apr 10, 2022 at 9:47

user1665220

1,2852 gold badges9 silver badges6 bronze badges

How is it possible that validation loss is increasing while validation accuracy is increasing as well

Awarded Feb 3, 2022 at 0:05

Konstantin Solomatov

1,5753 gold badges11 silver badges8 bronze badges

How does the reparameterization trick for VAEs work and why is it important?

Awarded Jan 29, 2022 at 17:02

David Dao

2,7944 gold badges13 silver badges16 bronze badges

Under what conditions does correlation imply causation?

Awarded Jan 4, 2022 at 3:26

Rob Hyndman

55.8k28 gold badges144 silver badges195 bronze badges

What, precisely, is a confidence interval?

Awarded Jan 2, 2022 at 12:31

dsimcha

8,6597 gold badges34 silver badges29 bronze badges

Is it necessary to scale the target value in addition to scaling features for regression analysis?

Awarded Dec 12, 2021 at 0:21

user2806363

2,6634 gold badges21 silver badges30 bronze badges

Why do we need to normalize data before principal component analysis (PCA)? [duplicate]

Awarded Dec 2, 2021 at 18:43

jjepsuomi

5,72712 gold badges38 silver badges51 bronze badges

Why isn't Logistic Regression called Logistic Classification?

Awarded Nov 25, 2021 at 10:57

Ismael Ghalimi

2,1662 gold badges15 silver badges22 bronze badges

Feature selection and cross-validation

Awarded Nov 25, 2021 at 9:17

BGreene

3,2634 gold badges20 silver badges36 bronze badges

What are examples where a "naive bootstrap" fails?

Awarded Nov 4, 2021 at 23:35

raegtin

9,58014 gold badges52 silver badges55 bronze badges

Simple algorithm for online outlier detection of a generic time series

Awarded Oct 25, 2021 at 8:35

gianluca

1,9714 gold badges16 silver badges9 bronze badges

Validation Error less than training error?

Awarded Oct 19, 2021 at 9:56

Bido

1,2633 gold badges9 silver badges5 bronze badges

What is the role of the logarithm in Shannon's entropy?

Awarded Oct 14, 2021 at 14:21

histelheim

2,9536 gold badges25 silver badges46 bronze badges

How scared should we be about convergence warnings in lme4

Awarded Oct 12, 2021 at 21:17

user1322296

1,6053 gold badges13 silver badges16 bronze badges

Using k-fold cross-validation for time-series model selection

Awarded Jul 24, 2021 at 9:09

Mickaël S

1,4383 gold badges11 silver badges6 bronze badges

Including the interaction but not the main effects in a model

Awarded Jul 20, 2021 at 15:58

Glen

6,7305 gold badges41 silver badges63 bronze badges

Softmax vs Sigmoid function in Logistic classifier?

Awarded Jun 28, 2021 at 19:56

mach

1,7753 gold badges12 silver badges13 bronze badges

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

Awarded Jun 22, 2021 at 0:56

skulker

1,3962 gold badges9 silver badges6 bronze badges

Where should I place dropout layers in a neural network?

Awarded Jun 20, 2021 at 13:57

Franck Dernoncourt

45.9k33 gold badges171 silver badges286 bronze badges

Why use gradient descent for linear regression, when a closed-form math solution is available?

Awarded Jun 15, 2021 at 16:41

Purus

1,3432 gold badges9 silver badges6 bronze badges

What loss function for multi-class, multi-label classification tasks in neural networks?

Awarded May 26, 2021 at 12:50

aKzenT

1,3612 gold badges9 silver badges5 bronze badges

Diagnostic plots for count regression

Awarded May 22, 2021 at 11:45

half-pass

3,6917 gold badges27 silver badges36 bronze badges

What is rank deficiency, and how to deal with it?

Awarded May 16, 2021 at 17:35

Jack Tanner

4,7624 gold badges31 silver badges39 bronze badges

Is this really how p-values work? Can a million research papers per year be based on pure randomness?

Awarded May 6, 2021 at 14:15

n_mu_sigma

1,0912 gold badges8 silver badges6 bronze badges

T-test for non normal when N>50?

Awarded May 5, 2021 at 18:02

even

2,3076 gold badges19 silver badges13 bronze badges

What exactly are keys, queries, and values in attention mechanisms?

Awarded May 2, 2021 at 16:49

Sean

3,4664 gold badges15 silver badges33 bronze badges

2 3 4 Next