Chapter 5

Question 1

Sample needs to be R………….

Answer 1

Representative

Question 2

What is a threat to selecting representative samples?

B

Answer 2

Bias

Biased samples differ significantly from population

Question 3

Law of large numbers

Answer 3

You want the sample size to be representative of the population

Question 4

Probability sampling

Exact size must be k…. and everyone able to be listed

Answer 4

Exact size must be known and everyone able to be listed

Random not biased
Nonprobability samples

Question 5

Simple random sample

Answer 5

Selections are independent of one another

-sample with replacement

Question 6

Systematic sampling

Every nth SS is s…….

Are usually R………….

Answer 6

Every nth SS is selected

Samples are usually representative

Question 7

Stratified random sample

Population is divided into s……. (strata)

Overall sample is usually not that representative of the p………

Answer 7

Population is divided into subgroups (strata)

Overall sample is usually not that representative of the population

-family income ranking

Question 8

Cluster sampling

Easy way to get a large, R…………. sample

Selections are not really r….. or I……….

Answer 8

Easy way to get a large, representative sample

Selections are not really random or independent

Question 9

Combined strategy sampling

Choose two or more m……

Increases chances sample is representative

Answer 9

Choose two or more methods

Increases chances sample is representative

Question 10

Nonprobability sampling

Convenience sample

• Sample from those a……..
• sample usually not representative

Quota sampling

• subgroups are identified then s……
• snowball sampling

Answer 10

Convenience sample

• Sample from those available
• sample usually not representative

Quota sampling

• subgroups are identified then sampled
• snowball sampling

Question 11

Selections have a huge impact on o……

Answer 11

Outcome