Statistical Terms

Question 1

An entire group of individuals that a sample is selected from:

Answer 1

Population

Question 2

A selected group of individuals from a population:

Answer 2

Sample

Question 3

Sampling methods that over or underemphasize some characteristics of the population are:

Answer 3

Biased

Question 4

The number of individuals in the sample:

Answer 4

Sample size

Question 5

A sample of the entire population:

Answer 5

Census

Question 6

Use mathematics to represent reality:

Answer 6

Model

Question 7

Key numbers in a model:

Answer 7

Parameter

Question 8

Used to estimate summaries of data:

Answer 8

Statistic

Question 9

Each combination of people has an equal chance of being selected:

Answer 9

Simple Random Sample

Question 10

A list from which the sample is drawn:

Answer 10

Sampling Frame

Question 11

Sample-sample differences:

Answer 11

Sampling Variability

Question 12

After a sample is taken, populations are sliced in groups called:

Answer 12

Strata

Question 13

Once strata are chosen, random sampling occurs and results are combined to form a statistic:

Answer 13

Stratified Random Sampling

Question 14

To sample a large population, one can split the population into:

Answer 14

Clusters

Question 15

Selecting a number of clusters at random and perform a census within each of them is:

Answer 15

Cluster Sampling

Question 16

Sampling every nth person on a list:

Answer 16

Systemic Sampling

Question 17

A trial run of a survey that eventually will be used with a larger group:

Answer 17

Pilot

Question 18

A large group of individuals is invited to respond, those who respond, are counted only (biased):

Answer 18

Voluntary Response Sample

Question 19

Bias occurring in a voluntary response sample:

Answer 19

Voluntary Response Bias

Question 20

Including individuals in a sample that are convenient to the sample:

Answer 20

Convenience Sampling

Question 21

Bias occuring when a large fraction of those sampled fail to respond:

Answer 21

Nonresponse Bias

Question 22

Bias occuring when there is anything in a survey design that influences responses or the sample:

Answer 22

Response Bias

Question 23

In a study where researchers do not assign choices; they just observe them:

Answer 23

Observational Study

Question 24

Researchers choose a group and record based on historical data:

Answer 24

Retrospective Study

Question 25

Researchers identify subjects in advance and collect data as events unfold:

Answer 25

Prospective Study

Question 26

Researchers manipulate factor levels to create treatments, randomly assign subjects to those treatment levels, and then compare the responses of the subject groups across treatment levels:

Answer 26

Experiment