Difference between revisions of "SD Command"
From GeoGebra Manual
m (unnecessary div tag) |
Noel Lambert (talk | contribs) (correcting the error in the last formula) |
||
| Line 12: | Line 12: | ||
;SD[ <List of Numbers>, <List of Frequencies> ] | ;SD[ <List of Numbers>, <List of Frequencies> ] | ||
: Calculates the weighted standard deviation of the given numbers. | : Calculates the weighted standard deviation of the given numbers. | ||
| − | :{{example|1=<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} | + | :{{example|1=<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 20:23, 8 February 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> ]
- Calculates the standard deviation of the numbers in the list.
- Example:
SD[{1, 2, 3, 4, 5}]yields \sqrt{2}
- SD[ <List of Numbers>, <List of Frequencies> ]
- Calculates the weighted standard deviation of the given numbers.
- Example:
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.
