Sampling

Question 1

What is a target population?

Answer 1

A large group of people the researcher wishes to study

Question 2

What is a sample?

Answer 2

A small groups of people who represent the target population who are studied

Question 3

What does it mean to be representative?

Answer 3

When the sample of p’s made up is to people who have the same characteristic and ability to target population

Question 4

What does it mean to generalise?

Answer 4

Refers to the extent to which we can apply our findings to the target population

Question 5

What is population validity?

Answer 5

The extent to which the sample can be generalised to a wider population

Question 6

What are the 6 types of sampleing?

Answer 6

-Opportunity
-Random
-Sampling
-Stratified
-Systematic
-Self selected

Question 7

What is opportunity sampling?

Answer 7

Sample of participants who are most easily available at the time of research

Question 8

Advantage of oppertunity?

Answer 8

Quick and easy

Question 8

Disadvantages of opportunity sampling?

Answer 8

A bias sample (small part of the population)

Question 8

What are random sampling?

Answer 8

Sample of participants who are randomly selected (out of a hat or a wheel) of the population. Everyone has an equal chance

Question 9

Advantages of random sampling?

Answer 9

Unbiased
representative of the population

Question 10

Disadvantages of random sampling?

Answer 10

Need to be well prepared (a list of p’s names, numbers and address)

Question 11

What is snowball sampling?

Answer 11

Relies on referrals from initial participant

Question 12

Advantages of snowball sampling?

Answer 12

enables researcher to get into contact with groups that are difficult to reach

Question 13

Disadvantages of snowball sampling?

Answer 13

Not amazing representation of the population as it relies on referrals from friends who will most likely share interests

Question 14

What is self selected sampling?

Answer 14

The sample relies on participants to volunteer

Question 15

Self selected sampling advantages?

Answer 15

More representative
Unbiased

Question 16

Disadvantages of self selected sampling?

Answer 16

Can be bias are p’s are motivated to help

Question 17

What is stratified sampling?

Answer 17

Produces a sample by selected participants in proportion of target population
Subgroups created and selected at random

Question 18

What are the advantages of stratified sampling?

Answer 18

Very representative
Unbiased

Question 19

What are the disadvantages of stratified sampling?

Answer 19

Time consuming to identify subgroups

Question 20

What is quota sampling?

Answer 20

Works the same as stratified by creating subgroups of population but instead of being at random the researcher chooses p’s in the sample

Question 21

Advantages of quota sampling?

Answer 21

Very representative as all sub groups are chosen
Can be generalised to population

Question 22

Disadvantages of quota sampling?

Answer 22

Time consuming

Question 23

What is systematic sampling?

Answer 23

Sample selected by every nth term
Can be random if first person selected is at random then its every nth term after that

Question 24

Advantages of systematic sampling?

Answer 24

Unbiased as p’s are selected through a system

Question 25

Disadvantages of systematic sampling?

Answer 25

Sample may not be representative of the target population
Not unbiased unless selection is random