Sampling techniques

Question 1

Random sampling

Answer 1

• every member of the pop has an equal chance of being chosen
• identifying the target pop
• names in a hat
• unbiased representative sample
• very time consuming
• impossible for a large target pop
• could not advertise as wouldn’t be sure everyone saw it

Question 2

stratified sampling

Answer 2

classifying the pop into categories then choosing people from those categories in the same proportions as they are in the total pop
very representative of the total pop
-very time consuming