sampling

Question 1

what is stratified sampling

Answer 1

method which involves categorising the population and then choosing a random sample which consists of participants from each category in the same proportion they are in the target population

Question 2

A03 stratifiéd

Answer 2

+ avoids researcher bias, can generalise as it reflects target population
- strata can’t reflect all ways people are different so doesn’t completely reflect population

Question 3

A03 volunteer

Answer 3

+ less time consuming as participants come to you
- if no one volunteers it’s more time consuming
- sample may attract certain type of person

Question 4

A03 oppurtunitu

Answer 4

+ convenient, saves time and cost
- researcher may avoid asking some people so could be bias
- unrepresentative as people are drawn from same place

Question 5

A03 systematic

Answer 5

+ avoids bias after set up, representative
- time consuming

Question 6

A03 random

Answer 6

+ free from researcher bias
- time consuming , complete list of population difficult to obtain