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confused
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23 votes
5 answers
4k views

Can someone explain the importance of mean stationarity in time series?

21 votes
2 answers
4k views

Can someone give the intuition behind Mean Absolute Error and the Median? [duplicate]

18 votes
4 answers
2k views

Does Bayesian statistics bypass the need for the sampling distribution?

12 votes
2 answers
835 views

What's the rationale for not checking residuals when building a ML model?

10 votes
3 answers
412 views

Would you say this is a trade off between frequentist and Bayesian stats?

10 votes
2 answers
4k views

Can someone explain to me the parameters of a lognormal distribution?

10 votes
1 answer
370 views

Does Lasso make irrelevant the need for coefficient significance testing?

7 votes
1 answer
1k views

Why does the likelihood function of a binomial distribution not include the combinatorics term? [duplicate]

6 votes
2 answers
3k views

In ML, once we remove a feature, can we safely assume that feature will not be important again?

6 votes
2 answers
3k views

Why do we not interpret main effects if interaction terms are significant in ANOVA?

5 votes
1 answer
320 views

Why in Hamiltonian MCMC do we multiply the posterior distribution by the likelihood?

4 votes
1 answer
3k views

What is the expected value of half a standard normal distribution?

4 votes
3 answers
3k views

What does the integral of a function times a function of a random variable represent, conceptually?

4 votes
2 answers
2k views

Are all slope coefficients correlated with the intercept in multiple linear regression?

4 votes
1 answer
498 views

Do we use different number of dummy variables for Classical and Bayesian stats?

4 votes
1 answer
5k views

How do you interpret prediction output in GBM() in R for classification problem?

4 votes
2 answers
142 views

Are time series models limited in real life application and are primarily used to model the residuals of another model?

4 votes
3 answers
189 views

How to interpret $x \in \mathbb{R}^n$?

4 votes
1 answer
63 views

Typo in Deepleariningbook.org or am I misunderstanding Bayesian stats?

4 votes
1 answer
233 views

Reference for doing linear regression with mean absolute deviation?

3 votes
1 answer
3k views

In sample splitting for time series data, do we randomly select data?

3 votes
1 answer
433 views

Does Maximum Likelihood Estimation solve n < p problem in regression?

3 votes
2 answers
815 views

Rationale for taking second derivative in least squares estimation?

3 votes
1 answer
662 views

Where is the divide between information criterion (AIC, BIC, etc...) and cross validation?

3 votes
2 answers
190 views

What exactly is violated if your response variable exhibits autocorrelation in ordinary least squares regression?

3 votes
1 answer
250 views

Clarification on how decision trees split up categorical variables?

3 votes
1 answer
2k views

In practice how do we determine the model coefficients after doing cross-validation?

3 votes
2 answers
318 views

What are the uses of bootstrap resampling?

3 votes
1 answer
119 views

When would it be computationally inefficient to sample from a distribution?

3 votes
1 answer
95 views

Simple Question On Independent Events