Population & Sample Variance
A practical example of why we divide by (n-1) when calculating the sample variance

Remittance and the exchange rate
Remittance is surprisingly not dependent on the prevailing exchange rate

Fertility & Infant Mortality
An analysis to determine the relationship between fertility and infant mortality rates

Are Movies Getting Better or Worse?
A fun little data analysis exercise using IMDB movie rating database

Introduction to R
Learn the basics of using R to perform simple data analysis

Curve smoothing in R
Common techniques for smoothing curves and how to do that in R