Unit 1 Statistics Vocabulary

Front

The number of times a value appears in a set of data.

Back

Frequency

Front

Lists the number of times that a piece of data occurs in a set. For sets of data with a large spread, the frequency is often grouped into equal intervals.

Back

Frequency Table

Front

A display of data that is along a number line with points, or symbols, indicating the frequency of information about a single question or category.

Back

Dot Plot (Line Plot)

Front

A type of bar graph used to display numerical data grouped in equal intervals. It shows the number of data items that occur within each interval.

Back

Histogram

Front

A diagram that summarizes data using the median, the upper and lower quartiles, and the extreme values (Five Number Summary).

Back

Box-and-Whisker Plot (box plot)

Front

The difference between the upper and lower quartiles. It indicates the spread of the middle 50% of the data.

Back

Interquartile Range (IQR)

Front

A number that indicates the variability of the data. Examples include Range, IQR, MAD.

Back

Measures of Spread

Front

The difference between the highest and lowest values in a set of data.

Back

Range

Front

A number that describes the middle or center of the data. Examples include mean, median, mode.

Back

Measures of Center

Front

The middle number when a set of data is arranged in order.

Back

Median