STATS UNIT 1 REVIEW

Question 1

Data

Answer 1

Any information that can be gathered

Question 2

Population

Answer 2

Every member of a group taken together.

Question 3

Sample

Answer 3

Part of a population used to make prediction about the whole population.

Question 4

Descriptive Statistics

Answer 4

Summarizing what is known about every member of a group.

Question 5

Inferential Statistics

Answer 5

Making population about a population based on data from sample.

Question 6

Context

Answer 6

The “who” (sample) and “what” (variables of a study)

Question 7

Variable

Answer 7

Information collected from a sample.

Question 8

Quantitative Variable

Answer 8

Variable that is measurable/counted has units.

Question 9

Categorical Variable

Answer 9

Variable that sorts objects into types of categories.

Question 10

Frequency

Answer 10

Number of time something occurs.

Question 11

Pie Chart

Answer 11

Based on percentage

Question 12

Bar Chart

Answer 12

Height of the bar depends on frequency.

Question 13

Relative Frequency

Answer 13

Another word for percentage (part divided by the whole)

Question 14

Two-Way Table

Answer 14

Table that shows the frequency on individuals falling into categories on 2 or more variables.

Question 15

Marginal Distribution

Answer 15

Relative Frequency of a variable for all categories.

Question 16

Conditional Distribution

Answer 16

The relative frequency of a variable for one particular category.

Question 17

Association

Answer 17

When one event does influence the probability of another event.

Question 18

Independence

Answer 18

When one event does not influence the probability of another event.