sampling methods

Question 1

sample

Answer 1

small group of people who represent target population and who are studied

Question 2

target population

Answer 2

large group of people who researcher wishes to study

Question 3

sampling methods

Answer 3

strategies used by researchers to select people from target population to take part in study

Question 4

representativeness

Answer 4

when sample of p’s is made up of people who have same characteristics and abilities as target population

Question 5

generalise

Answer 5

refers to extent to which we can apply findings of our research to target population we are interested in

Question 6

researcher bias

Answer 6

person performing the research influences the results

Question 7

what is random sampling

Answer 7

every member of target pop has an equal chance of being selected for sample

1. list of all members of target pop
2. give each a number
3. selected using random method- names out of hat

Question 8

what is volunteer sampling

Answer 8

people volunteer to participate
select themselves to participate by often replying to adverts

Question 9

what is opportunity sampling

Answer 9

choosing people of target population who are willing and available to take part

Question 10

what is systematic sampling

Answer 10

selecting every nth term/number on list of target population

1. list of target population
2. select nth number eg n=3
3. repeat until complete

Question 11

what is stratified sampling?

Answer 11

selecting participants in proportion to their frequency in target population

1. identify subgroups making up target pop
2. work out proportions needed for sample to be rep
3. p’s randomly selected to reflect eg names out of hat