Few other types of sampling techniques

a. multi-phase sampling:

• Part of sample collected from whole and part from subsample.
• Less costly, less laborious and more purposeful.

b. Matched random sampling:

• First gathering the similar sample at one place and distributing evenly these samples to all.
• Eg: Milk yield of cow before and after being fed a particular diet.

c. Event sampling:

• Allow researchers to study ongoing experiences and events that vary in its naturally-occurring environment.
• Eg: Writing experiences in diary.
• In Event sampling, participants are asked to record their experience and perceptions in a paper or electronic diary.
• Event sampling method don’t give meaningful prediction when

a) Someone performs a repetitive task throughout the day.

b) Dependent variables are long term in nature ( Coronary heart problems)