RM L6: Sampling techniques -

Question 1

Define ‘population’

Lesson 6

Answer 1

• An entire group with specific charecterisitics
• The target group / population is the desired population to be studied and wanted research findings to generalise to

Question 2

Define ‘sample’

Lesson 6

Answer 2

• The specific group from that population that the researcher will collect data from

Question 3

What is opportunity sampling?

Lesson 6

Answer 3

• Researcher selects ppts who are readily available
• In the right place at the right time

Question 4

What is the 1 strength of oppurtunity sampling?

Lesson 6

Answer 4

1. Large no. of ppts can be recruited quickly and easily bcoz we using ppl who already there at time of study

Question 5

What are the 2 weaknesses of opportunity sampling?

Lesson 6

Answer 5

1. Unlikely to have a wide variety of ppts as if all ppts in the same place we are recruiting similar people
2. Findings are less generalisable as we don’t have a wide variety of ppts

Question 6

What is random sampling?

Lesson 6

Answer 6

• Every personn in target population has equal chance of being selected
• Randomly picking ppts to be in study
• Collecting names of all ppts from target population and then using name generator

Question 7

What is 1 strength of random sampling?

Lesson 6

Answer 7

1. Researcher can generalise to population with more confidence as sample is more likely to be representative of target population

Question 8

What are the 3 weaknesses of random sampling?

Lesson 6

Answer 8

1. Cannot guarantee representative sample as could be all females
2. Getting details of target population and drawing a sample is hard / time consuming process
3. Ppts can withdraw then we have to pick another ppt randomly

Question 9

What is volunteer (self selecting) sampling?

Lesson 6

Answer 9

• When ppts put themselves forward to take part in study
• Advertise thru social media, posters, newspapers, radio

Question 10

What is 1 strength of volunteer sampling?

Lesson 6

Answer 10

1. Ppts are more likely to participate if already volunteered so they dropout rate will be lower

Question 11

What are the 2 weaknesses of volunteer sampling?

Answer 11

1. Researcher is unlikely to gain wide variety of ppts which mean results will be less generalisable
2. Group will consist only of ppl who volunteer to be part of study