Chapter 3 | Experimental and Sampling Design

Question 1

What is a simple random sample?

Answer 1

a random sample is pulled from one main population

Question 2

What is a Stratified random sample

Answer 2

the population is divided into groups of similar individuals (strata), a random sample is selected from each strata and the results are compared

Question 3

What is a multistage sample?

Answer 3

A large population is broken down into smaller groups. Groups are randomly selected and then individuals are selected randomly from them.

Question 4

What is a capture-recapture sample?

Answer 4

its a catch and release. overall population is estimated, a random sample is pulled, tagged and released. Then a random sample is collected again and the number tagged is counted.

Question 5

What is the capture-recapture equation?

Answer 5

Number in original sample/Total population = number tagged in second sample/total number in second sample

Question 6

What are the experimental designs

Answer 6

randomized block design
matched pairs
completely randomized

Question 7

What are the sampling designs

Answer 7

anecdotal
voluntary
Random or probability based:
-Simple random (SRS)
-stratified random
-capture-recapture
-multistage

Question 8

What are the biases

Answer 8

undercoverage
nonresponse
response bias

Question 9

what is undercoverage bias

Answer 9

some groups in the population are left out of the process of choosing the sample

Question 10

What is nonresponse bias

Answer 10

an individual chosen for the sample can’t be contacted or does not cooperate

Question 11

what is response bias

Answer 11

respondents may lie, forget, or over exaggerate details