Participants

Question 1

Target populations

Answer 1

Specific groups of people, e.g. sixth form.

Question 2

Sampling frames

Answer 2

• Time sample or specific group.
• Linked to observation.

Question 3

Random sampling

Answer 3

Names out of a hat meaning everyone has an equal change to be picked.

Question 4

Opportunity sampling

Answer 4

Choose whoever is there at the time.

• ADV = Easy to use.
• DIS = Could say no.

Question 5

Systematic sampling

Answer 5

Write down a list of names, choose every 3rd person.

Question 6

Stratified sampling

Answer 6

Participants from every layer / each group.

• ADV = Gains accurate data.

Question 7

Quota sampling

Answer 7

In proportion, more participants from a bigger group.

• ADV = Gains accurate data.

Question 8

Self selected / volunteer sampling

Answer 8

Place an advert. People see this and volunteer themselves.

• DIS = Only certain people volunteer.

Question 9

Snowball sampling

Answer 9

You pick a person, they pick someone else and so on.

• DIS = Could be bias, most likely to choose their friends.

Question 10

Observation sampling technique

Answer 10

Focusing on something specific.

Question 11

Advantage & disadvantage for all sampling methods.

Answer 11

ADV = No researcher bias.

DIS = Could still be sample bias.

Question 12

Experimental design:
Independent groups

Answer 12

Using 2 or more separate groups.

Question 13

Experimental design:
Repeated measures

Answer 13

One group used for the whole study.

Question 14

What are the 5 ethical issues that concern participants?

Answer 14

• Confidentiality.
• Deception.
• Protection from harm.
• Valid consent.
• Right to withdraw.