# Difference between revisions of "SampleSD Command"

From GeoGebra Manual

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− | + | <noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|cas=true|statistics}} | |

− | <noinclude>{{Manual Page|version= | + | ;SampleSD( <List of Numbers> ) |

− | {{command|statistics}} | + | :Returns [[w:Standard_deviation#Estimation|sample standard deviation]] of given [[Lists|list]] of numbers. |

− | ;SampleSD[ <List of Numbers> ] | + | :{{example|1=<code><nowiki>SampleSD({1, 2, 3})</nowiki></code> yields ''1''.}} |

− | :{{ | + | |

+ | ;SampleSD( <List of Numbers>, <List of Frequencies> ) | ||

+ | :Returns the ''standard deviation'' of the sample of numbers having the given frequencies. | ||

+ | :{{example|1=<code><nowiki>SampleSD({1, 2, 3, 4, 4},{1, 1, 1, 2})</nowiki></code> yields ''1.08''.}} | ||

+ | |||

+ | {{hint|1= | ||

+ | If the list contains undefined variables in the [[File:Menu view cas.svg|link=|16px]] [[CAS View]], the command yields a formula for the ''sample standard deviation''. | ||

+ | :{{example|1=<code><nowiki>SampleSD({1, 2, a})</nowiki></code> yields <math>\frac{\sqrt{a²-3a+3}}{\sqrt{3}}</math>.}} | ||

+ | }} |

## Latest revision as of 10:04, 12 October 2017

- SampleSD( <List of Numbers> )
- Returns sample standard deviation of given list of numbers.
**Example:**`SampleSD({1, 2, 3})`

yields*1*.

- SampleSD( <List of Numbers>, <List of Frequencies> )
- Returns the
*standard deviation*of the sample of numbers having the given frequencies. **Example:**`SampleSD({1, 2, 3, 4, 4},{1, 1, 1, 2})`

yields*1.08*.

**Hint:**If the list contains undefined variables in the CAS View, the command yields a formula for the

*sample standard deviation*.

**Example:**`SampleSD({1, 2, a})`

yields \frac{\sqrt{a²-3a+3}}{\sqrt{3}}.