Introduction Sampling is the process of selecting a portion or subset of a population to represent the whole. Since st…

Introduction  In statistical investigations, it is often impossible or impractical to study an entire population due t…

Introduction  Sampling techniques are methods used to select a portion ( sample ) from a large group ( population ) fo…

Introduction  Data refers to the raw facts, figures , or information collected for the purpose of analysis and decis…

Introduction  Statistics (from German: Statistik, orig. "description of a state, a country") is the discipli…