Statistics Vocabulary - Digital Textbook

Front 1

bar graph

Back 1

A graph that uses horizontal or vertical bars to display data.

Front 2

chart

Back 2

A diagram that illustrates information in the form of a table, graph, or picture.

Front 3

circle graph or pie graph

Back 3

A graph in which the data is represented by sectors of a circle; the total of all the sectors should be 100% of the data; represents each type of data as part of the whole

Front 4

data

Back 4

Information collected and used to analyze a particular concept or situation.

Front 5

degree of a circle

Back 5

The unit of measurement for angles; 1° is the measure of an angle which
forms one three hundred sixty-th of a circle.

Front 6

double-bar graph

Back 6

A graph that uses pairs of bars to compare and show the relationship between data.

Front 7

double-line graph

Back 7

A graph that uses pairs of lines that show change over time to represent and compare data.

Front 8

frequency

Back 8

The number of times an event occurs.

Front 9

frequency table

Back 9

A table that shows how often each item, number, or range of numbers occurs in a set of data.

Front 10

graph

Back 10

A graphic representation used to show a numerical relationship.

Front 11

histogram

Back 11

A special kind of bar graph that displays the frequency of data that has been organized into equal intervals; the intervals cover all possible values of data, therefore there are no spaces between the bars of the graph; the horizontal axis is divided into continuous equal intervals.

Front 12

horizontal

Back 12

Parallel to or in the plane of the horizon.

Front 13

key

Back 13

A table for decoding or interpreting; a notation that explains something such as the value of each symbol or picture on a pictograph.

Front 14

line graph

Back 14

A graph that uses line segments to show changes in data; the data usually represents a quantity changing over time.

Front 15

mean

Back 15

A measure of central tendency; the quotient obtained when the sum of the numbers in a set is divided by the number of addends.

Front 16

median

Back 16

The middle number of a set of numbers arranged in increasing or decreasing order; if there is no middle number, the median is the average of the two middle numbers.

Examples: The median of the numbers 1, 1, 2, 4, 5, 6, and 7 is 4.
The median of the numbers 1, 1, 2, 4, 5, 6, 7, and 7 is 4.5

Front 17

misleading graph

Back 17

A graph that leads the reader to make an incorrect conclusion or to form a false impression.

Front 18

mode

Back 18

The number or members of a data set that occurs most frequently in the set.

Front 19

order

Back 19

To place numbers or objects in a sequential arrangement (e.g., least to greatest or heaviest to lightest).

Front 20

percent

Back 20

A number expressed in relation to 100; represented by the symbol % (e.g., 40 parts out of 100 is 40%).

Front 21

pictograph

Back 21

A graph that uses pictures or symbols to represent data; an accompanying key indicates the value associated with each picture or symbol.

Front 22

poll

Back 22

The results of a question or questions answered by a group of people.

Front 23

population

Back 23

A group of people, objects, or events that fit a particular description; in statistics, the set from which a sample of data is selected.

Front 24

predict

Back 24

To be able to determine the next step or value (to make an educated guess), based on evidence or a pattern.

Front 25

random sample

Back 25

A sample obtained by a selection from a population, in which element of the population has an equal chance of being selected.

Front 26

range of a data set

Back 26

The difference between the greatest and the least values in a set of numbers.

Example: Given the data: 2, 7, 3, 14, –1, 6, 34, –3

The range is 34 – (–3) = 37

Front 27

raw data

Back 27

Collected information before the application of statistical procedures.

Front 28

sample

Back 28

A representative part or a single item from a larger whole or group; a finite part of a statistical population whose properties are studied to gain information about the whole.

Front 29

sampling

Back 29

Selecting a small group which would be representative of the entire population; used in taking a survey.

Front 30

statistics

Back 30

The collection, organization, presentation, and analysis of data.

Front 31

survey

Back 31

To ask either written or verbal questions for the purpose of acquiring information/data.

Front 32

table

Back 32

A systematic or orderly list of values, usually in rows and columns.

Front 33

tally mark

Back 33

A mark used to keep track of data being counted.

Front 34

technical writing

Back 34

A genre of writing whose purpose is to describe, explain, or defend a mathematical idea, reasoning or process.

Front 35

vertical

Back 35

Straight up and down; perpendicular to the horizon.