sampling

Question 1

what is volunteer sampling and a strength and weakness of it

Answer 1

volunteer is where pps nominate themselves to take part

strength-
most ethical
is convinient, can quickly gather a sample

weakness- volunteer bias, all may share similar characteristics and traits so is therefore unrepresentative
may have more demand characteristics, feel more inclined to act in a certain way due to being paid etc.

Question 2

what is opportunity sampling and strengths and weaknesses

Answer 2

using those availbale to you

strengths-
quickest and most economical, meaning can reach conclusions quciker

weaknesses-
prone to researcher bias
likely to be unrepresentative as all ppl in same place at once

Question 3

what is random sampling and strengths and weaknesses of it

Answer 3

allocating each pps a number, then random number generator

strength-
no researcher bias, no control over who gets picked
most likely to be repsentative as it is random

weakness-
can be very time consuming with a large population

Question 4

what is snowball sampling and strengths and weaknesses

Answer 4

initial pps recruit new pps to take part

strenght-
can access hard to reach groups
useful for explatory research, rather than generalisable fidnings
cost and time effective, others doing recruitment process

weakness-
having to rely on others
unlikely to be representative as all part of same social network (sample bias)