sampling techniques

Question 1

Strengths and weaknesses of opportunity sampling

Answer 1

Strengths - quicker and easier

weaknesses - Not representative as the kinds of people are similar

Question 2

How are participants chosen for opportunity sampling

Answer 2

participants are chosen because they are available and around at the time

Question 3

How are participants chosen for volunteer sampling

Answer 3

participants are invited to participate by advertising the experiment and wait for people to reply

Question 4

Strengths and weaknesses of volunteer sampling

Answer 4

strength : relatively easy and participants are committed
weaknesses : non - representative similar kind of people

Question 5

How are participants from snowball sampling collected

Answer 5

Small number to start with and the participants themselves contact more people to take part

Question 6

Strengths and weaknesses of snowball sampling

Answer 6

strength: easy because can start with small number also great way to find people of similar kind
weaknesses: non-representative as likely to be very very similar

Question 7

How are participants for random sampling collected

Answer 7

all members of population are chosen from a sampling frame

Question 8

strengths and weaknesses of random sampling

Answer 8

strengths: representative , reduces bias
weaknesses: hard to ensure everyone is likely to be chosen

Question 9

how are participants for stratified sampling chosen

Answer 9

all types of members of the population are deliberately chosen based on the proportion to their existence in the population

Question 10

Strengths and weaknesses of stratified sampling

Answer 10

strength: representative
weaknesses: Difficult and time consuming, need details of your target popluation to replicate