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All questions asked by Dendrobium

List all solved & unsolved questions asked by Dendrobium

I was not directly involved vs I had not directly involved vs I did not directly involve?

1   English Language & Usage Asked on 07/03/2021

grammar  syntactic analysis 

Calculating the Hazard Ratio for a Cox-regression model stratified by a variable (R)

2   Cross Validated Asked on 11/14/2021

cox model  hazard  r  regression  survival 

Normalizing zero inflated predictors for multiple regression

0   Cross Validated Asked on 11/14/2021

data transformation  multiple regression  pca  regression  skewness 

Should we always calculate the z in a confidence interval as 1 - (alpha/2)?

1   Cross Validated Asked on 11/14/2021

confidence interval  z statistic 

What are the contours lines on the Cook's list vs Leverage h_ii / (1-h_ii) plot?

1   Cross Validated Asked on 11/14/2021

regression 

How to define and plot a distribution function in python?

0   Cross Validated Asked on 11/14/2021

density function  distributions  normal distribution  probability  python 

Should multivariate time series by normalized in any way before fitting a VAR model?

0   Cross Validated Asked on 11/14/2021

normalization  time series  vector autoregression 

Sample Size Calculation - Two Independent Means

1   Cross Validated Asked on 11/14/2021

hypothesis testing  marketing  statistical power 

Unbiased estimatior for $bar{x} $ from a Random Sample with unequal selection probability

1   Cross Validated Asked on 11/14/2021

estimators  sampling  self study  survey sampling  unbiased estimator 

How the concordance index is calculated in Cox model if the actual event times are not predicted?

2   Cross Validated Asked on 11/14/2021

cox model  survival 

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