Stats Standard Deviation

μ

Symbol for population mean

σ

Symbol for population standard deviation

Mean

The Average

Sample

A part of population

data

Information used to draw conclusions

Statistics

The collection, organization, and interpretation of data

Median

The middle number after a set of data is organized from lowest to highest.

Mode

The number that appears the most

5-number summary and standard deviation

Two methods that measure the spread of a set of data.

Outlier

an observation that is numerically distant from the rest of the data

σ²

symbol for population variance

- X

symbol for sample mean

S

symbol for sample standard deviation

S^2

symbol for sample variance

Range

the difference between the greatest data value and the least data value