Difference between revisions of "SampleSD Command"
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− | <noinclude>{{Manual Page|version=5.0}}</noinclude> | + | <noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|cas=true|statistics}} |
− | {{command|cas=true|statistics}} | ||
;SampleSD[ <List of Numbers> ] | ;SampleSD[ <List of Numbers> ] | ||
:Returns [[w:Standard_deviation#Estimation|sample standard deviation]] of given [[Lists|list]] of numbers. | :Returns [[w:Standard_deviation#Estimation|sample standard deviation]] of given [[Lists|list]] of numbers. | ||
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;SampleSD[ <List of Numbers>, <List of Frequencies> ] | ;SampleSD[ <List of Numbers>, <List of Frequencies> ] | ||
− | :Returns the standard deviation of the sample of numbers having the given frequencies. | + | :Returns the ''standard deviation'' of the sample of numbers having the given frequencies. |
:{{example|1=<div><code><nowiki>SampleSD[{1, 2, 3, 4, 4},{1, 1, 1, 2}]</nowiki></code> yields ''1.08''.</div>}} | :{{example|1=<div><code><nowiki>SampleSD[{1, 2, 3, 4, 4},{1, 1, 1, 2}]</nowiki></code> yields ''1.08''.</div>}} | ||
− | + | {{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=<div><code><nowiki>SampleSD[{1, 2, a}]</nowiki></code> yields <math>\frac{\sqrt{a²-3a+3}}{\sqrt{3}}</math>.</div>}} | :{{example|1=<div><code><nowiki>SampleSD[{1, 2, a}]</nowiki></code> yields <math>\frac{\sqrt{a²-3a+3}}{\sqrt{3}}</math>.</div>}} | ||
+ | }} |
Revision as of 10:50, 27 August 2015
- 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}}.