Research Methods: Sampling

Question 1

Population

Answer 1

large group of people

Question 2

target population

Answer 2

specific groups of people you intend to study

Question 3

Sample

Answer 3

a small group of target population you are going to study

Question 4

Radom Sampling

Answer 4

• Eveyone in target pop has a chance to be picked
• Adv: can get the perfect sample that removes bias
• Limitations: rare (hard to get a population list)
• method: computer generated or names from a hat

Question 5

Systematic Sampling

Answer 5

• Selecting participants at set points on a list
• Adv: helps to get a representative sample from each group
• Limits: rare, hard to get a population list
• method: eg choose every 10th person

Question 6

Opportunity

Answer 6

• whoever is able and willing to take park is chosen
• Adv: easy and practicle
• Limit: likely to produce a biased result
• method: ask family, friends, ppl know etc

Question 7

Stratified

Answer 7

• sample contains proportional charaictistics of population
• adv: avoids researcher bias and is representative and generalisable
• limit: sub groups strata cannot reflect all the ways ppl differ
• Method: identify people that make up the pop and turn into proportions, make sure the sample contains the randomly selected proportional strata

Question 8

Volunteer

Answer 8

• participants volenter to take part
• adv: quick and easy and the sample are more motivated
• limit: underrepresentitve, volunteer bias
• method: adervertise for study and get volunteers