Sampling pros and cons

Question 1

Simple random sample pros and cons?

Answer 1

Each member has fair representation

• Outliers are included
• Costly (travel)

Question 2

Cluster sample pros and cons?

Answer 2

Less costly

-Outliers included
Cluster may not be representative of total population

Question 3

Systematic sample pros and cons?

Answer 3

Tends to be unbiased
Can be done autonomously

• nth item may coincide with faulty pattern
• decimals are rounded, so sample is not fully accurate

Question 4

Stratified sample pros and cons?

Answer 4

Size of each sample is in proportion to size of each strata within population

-expensive

Question 5

Quota sample pros and cons?

Answer 5

Number of people picked from strata is random

-Choosing number of members is not random (biased)