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wcampbell's user avatar
wcampbell's user avatar
wcampbell
  • Member for 12 years, 8 months
  • Last seen more than 5 years ago
27 votes
Accepted

Wald test in regression (OLS and GLMs): t- vs. z-distribution

12 votes
Accepted

Partial Dependency plots and Gradient boosting (GBM package)

8 votes

Ordinal predictors in linear multiple regression in SPSS or R

7 votes
Accepted

Why doesn't the Cramér-Rao lower bound apply?

6 votes
Accepted

Something like Central Limit Theorem for variance and maybe even for covariance?

6 votes
Accepted

A Question about the Bootstrap Distribution

6 votes

Cluster analysis on panel data

6 votes

Real life examples of distributions with negative skewness

5 votes
Accepted

Durbin-Watson test for residuals of SARIMA(1,1,1) in R

5 votes
Accepted

Appropriate Application of Survival Analysis

4 votes
Accepted

Using interaction term for describing non-linear relationship in regression model

4 votes

Prove F test is equal to T test squared

4 votes
Accepted

Which metric should I trust to evaluate my predictive model

3 votes

OLS vs. quantile regression

3 votes

Regression model where output is a probability

3 votes

Value that increases the Standard Deviation

3 votes

How do you estimate correlations between ordinal and binary data in SPSS?

3 votes
Accepted

(Quantile regression) Which standard error for heteroscedasticity & serial correlation

3 votes
Accepted

Remove data starting before defined start date for survival analysis

2 votes

Bootstrap confidence interval programming

2 votes

How do I establish shape and scale parameters?

2 votes

Simple introduction to linear models in R

2 votes
Accepted

Why is my bootstrap function for paired samples t test in R not returning the same result as SPSS?

2 votes

What do normal residuals mean and what does this tell me about my data?

2 votes

Formula for non-linear regression in R

2 votes

How to choose the number of trees in a generalized boosted regression model?

2 votes
Accepted

Approach to cluster facebook users

2 votes

Time-series autocorrelations all positive

2 votes

Identifying distribution of a variable

1 vote
Accepted

Is it ok to spit non-normal variables in tertiles and put them into multivariate regression models?