# Tom H

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bio website limepepper.co.uk location London, United Kingdom age 36 member for 2 years seen Apr 25 at 0:35 profile views 6

I spend my professional time working with Linux server technologies.

I previously obtained an RHCE, and studied Computing and Statistics for an undergraduate degree.
Currently working through a Medicinal Chemistry MSc with the Open University.

Have made some minor contributions to some open-source projects on github; https://github.com/tolland

and maintain a terrible ranty, unresearched speculation blog on blogspot.co.uk; http://take-your-vitamins.blogspot.com/

Also I am trying to collect together my various IT best-practice notes in a wiki here; http://bodgeit.wikia.com/wiki/Bodge-it_Wiki

None of this is fit for human consumption.

# 5 Questions

 4 How to find a confidence interval for a contrast? 3 Why is the first postulate of the Poisson process that $\lambda dt$ is the probability of exactly one event in $[t,t+dt]$? 2 t-test that means are the same? 1 When should I use $E(X)$ and when to use $\mu$ for the mean? 0 What assumptions do I need to check to combine levels in a categorical predictor for use in a GLM?

# 156 Reputation

 +20 How to find a confidence interval for a contrast? +10 t-test that means are the same? +8 When should I use $E(X)$ and when to use $\mu$ for the mean? +5 Why is the first postulate of the Poisson process that $\lambda dt$ is the probability of exactly one event in $[t,t+dt]$?

This user has not answered any questions

# 11 Tags

 0 poisson 0 notation 0 assumptions 0 probability 0 categorical-data 0 basic-concepts 0 generalized-linear-model 0 t-test 0 data-transformation 0 contrasts

# 21 Accounts

 Server Fault 5,190 rep 1927 Stack Overflow 727 rep 618 Area 51 204 rep 5 TeX - LaTeX 161 rep 3 Cross Validated 156 rep 5