Chapter 8 Vocabulary-Statistics

Front

Population

Back

An entire group of people or objects.

Front

Sample

Back

A part of a population.

Front

Unbiased Sample

Back

Representative of a population.

Front

Biased Sample

Back

Not representative of a population.

Front

Mean

Back

A measure of center calculated by finding the sum of the data divided by the number of data values.

Front

Median

Back

A measure of center found by ordering data values least to greatest and finding the middle value.

Front

Mode

Back

The data value that occurs most often; can have one, more than one, or no mode.

Front

Range

Back

The difference between the greatest and least value of a data set; a measure of variation.

Front

Interquartile Range (IQR)

Back

A measure of variation for a data set, which is the difference between the third quartile and the first quartile.