of Data and Sampling Methods
Statistical data are the basic ‘ingredients’ of Statistics on
which statistician work. A set of numbers representing records of observations
is termed statistical data. The need to collect data arises in every sphere of
human activity. However that ‘Garbage in garbage out’ applies in Statistics
too. Hence adequate care must be taken in the collection of data. It is a poor
practice to depend on whatever data available.
There are five important questions to ask in the process of
collecting data: What?
This unit addresses the above Questions in detail