Sampling – Concept and Methods
Probability Sampling Methods - Types
Non-probability Sampling Methods - Types
Central Limit Theorem
Statistical Estimation – Meaning & Types
In this case the researcher first identifies relevant
categories of people (Ex; Male & Female, or
Under age of 30, age 30 to 60, over 60 etc.)
then decide how many to get in each category.
The researcher decides to select 5 males and 5
females under age 30, 10 males and 10 females
aged 30 to 60 and 5 males and 5 females over
the age of 60 for a 40 person sample.