Take the Learn Python Challenge June 11-17:

Kaggle is a platform for predictive modelling and analytics competitions in which statisticians and data miners compete to produce the best models for predicting and describing the datasets uploaded by companies and users. Kaggle is a great place to learn, whether that’s through the more traditional learning tracks or by competing in competitions. Python has … Continue reading Take the Learn Python Challenge June 11-17:

Simple random sample and a stratified random sample

Simple random samples and stratified random samples differ in how the sample is drawn from the overall population of data. Simple random samples involve the random selection of data from the entire population so each possible sample is equally likely to occur. In contrast, stratified random sampling divides the population into smaller groups, or strata, … Continue reading Simple random sample and a stratified random sample