Sampling

Question 1

Population

Answer 1

The entire group of individuals for a statistical study

Question 2

Explanatory Variable

Answer 2

Helps to explain or predict changes in the response variable

x, input, independent

Question 3

Response Variable

Answer 3

Used to measure the outcome of a study.

y, output, dependent

Question 4

Influential Observation

Answer 4

A point in a scatter plot that changes the regression line

Question 5

Sample

Answer 5

A part of a population

Question 6

Bias

Answer 6

Systematically favoring certain outcomes

Question 7

Voluntary Response Sample

Answer 7

A sample from volunteers who are choosing to participate

Question 8

Convenience Sample

Answer 8

Choosing random participants for a sample convienently instead of stratigically

Question 9

SRS

Answer 9

Simple Random Sample

Question 10

Stratified Random Sample

Answer 10

Group(strata) by a common variable, then take SRS of each group (strata)

Question 11

Undercoverage

Answer 11

Some group of the population left out in choosing process

Question 12

Nonresponse

Answer 12

Individual cannot be contacted/does not cooperate

Question 13

Response Bias

Answer 13

Interviewer may have an influence on respondant’s answers

Question 14

Census

Answer 14

The collection of data from every individual in the population