Interview method is the most popular method for collecting primary data. It is widely used in every fields or sectors. The interview techn...

Depending upon the sources, mainly there are two types of data i.e. primary data and secondary data. Primary data are those data which ar...

Non-Probability sampling techniques: This types of sampling techniques in which every unit of the population has not an equal chance of bein...

Generally there are two types of sampling techniques which are described below: Probability (Random) sampling technique Non-probability (no...