Difference between revisions of "SD Command"
From GeoGebra Manual
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;SD[ <List of Numbers> ] | ;SD[ <List of Numbers> ] | ||
;SD[ <List of Numbers>, <List of Frequencies> ] | ;SD[ <List of Numbers>, <List of Frequencies> ] | ||
− | :{{ | + | :{{examples|1=<br><code><nowiki>SD[{1, 2, 3, 4, 5}]</nowiki></code> yields <math>\sqrt{2}</math>.<br><code><nowiki>SD[{-3 + 2 x, -1- 4 x, -2 + 5 x^2}]</nowiki></code> is [[Evaluate Tool|evaluated]] as [[File:Tool Evaluate.gif]] $\frac{\sqrt{25x⁴ + 10x³ + 28x² - 18x + 3 \sqrt{2} \; } \; }{ \; 3 \; }\;$ }} |
− | :{{note| 1=<div>See also [[Mean Command]].</div>}} | + | :{{note|1=<div>See also [[Mean Command]].</div>}} |
Revision as of 19:01, 30 January 2013
- SD[ <List of Numbers> ]
- Calculates the standard deviation of the numbers in the list.
- Example:
SD[{1, 2, 3, 4, 5}]
yields 1,41.
- SD[ <List of Numbers>, <List of Frequencies> ]
- Calculates the weighted standard deviation of the given numbers.
- Example:
SD[{20, 40, 41, 42, 40, 54}, {20, 6, 4, 5, 2} ]
yields 5.96.
CAS Syntax
- SD[ <List of Numbers> ]
- SD[ <List of Numbers>, <List of Frequencies> ]
- Examples:
SD[{1, 2, 3, 4, 5}]
yields \sqrt{2}.SD[{-3 + 2 x, -1- 4 x, -2 + 5 x^2}]
is evaluated as $\frac{\sqrt{25x⁴ + 10x³ + 28x² - 18x + 3 \sqrt{2} \; } \; }{ \; 3 \; }\;$
- Note:See also Mean Command.