Difference between revisions of "SD Command"

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;SD[ <List of Numbers> ]
 
;SD[ <List of Numbers> ]
 
:Calculates the standard deviation of the numbers in the list.
 
:Calculates the standard deviation of the numbers in the list.
:{{example|1=<div><code><nowiki>SD[{1, 2, 3, 4, 5}]</nowiki></code> yields ''1.41''</div>}}
+
:{{example|1=<code><nowiki>SD[{1, 2, 3, 4, 5}]</nowiki></code> yields ''1.41''}}
 
;SD[ <List of Numbers>, <List of Frequencies> ]: Calculates the weighted standard deviation of the given numbers.
 
;SD[ <List of Numbers>, <List of Frequencies> ]: Calculates the weighted standard deviation of the given numbers.
:{{example|1=<div><code><nowiki>SD[{20, 40, 41, 42, 40, 54}, {20, 6, 4, 5, 2} ]</nowiki></code> yields ''5.96''</div>}}
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:{{example|1=<code><nowiki>SD[{20, 40, 41, 42, 40, 54}, {20, 6, 4, 5, 2} ]</nowiki></code> yields ''5.96''}}
 
==CAS Syntax==
 
==CAS Syntax==
 
;SD[ <List of Numbers> ]
 
;SD[ <List of Numbers> ]

Revision as of 13:04, 5 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 Tool Evaluate.gif $\frac{\sqrt{25x⁴ + 10x³ + 28x² - 18x + 3 \sqrt{2} \; } \; }{ \; 3 \; }\;$
Note:
See also Mean Command.
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