Some reviews for Martingales

1. Simple Random Walk
2. Sample path

https://math.stackexchange.com/questions/1472068/what-is-a-sample-path-of-a-stochastic-process

Cox and Poisson regression

Detailed notes on constructing restricted cubic spline

A simple review of Poisson regression

MGF, Laplace and Fourier

1.Laplace. 2. MGF, 3 Fourier

Statistical Errors in the Medical Literature

http://www.fharrell.com/2017/04/statistical-errors-in-medical-literature.html

Taylor series and Delta method