sampling techniques

Question 1

opportunity

Answer 1

• taking the sample from people who are available at the time the study is carried out and fit the criteria your are looking for

Question 2

+ of opportunity

Answer 2

cheap + quick (not time consuming). e.g you can use friends, family, coworkers.

Question 3

• of opportunity

Answer 3

can produce a biased sample as the researcher may choose people from their own social and cultural group to participate.
sample not representative of your target population as you friends may have different qualities to people in general.

Question 4

volunteer

Answer 4

ppts volunteer when asked to or in response to an advert.

Question 5

+ of volunteer

Answer 5

• quick + easy
• reaches wide variety of ppt

Question 6

• of volunteer

Answer 6

type of participants who volunteer may not be representative of the target population for a number of reasons. those with strong views for the subject are more likely to participate.

Question 7

random

Answer 7

a sample in which every member of the population has an equal chance of being chosen

Question 8

+ of random

Answer 8

gives an unbiased representative sample of a target population, high gen

Question 9

• of random

Answer 9

• time consuming and is often impossible to carry out when you have a large target population

Question 10

stratified

Answer 10

classifying the population into categories and then choosing a sample which consists of participants from each category in the same proportions as they are in the population

Question 11

+ of stratified

Answer 11

unbiased rep sample, high gen

Question 12

• of stratified

Answer 12

• time consuming as the categories have to be identified and calculated
• if you do not have details of all the people in your target population you would struggle to conduct a stratified sample