Difference between revisions of "SD Command"

Revision as of 12:33, 30 July 2015

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

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[{-3 + 2 x, -1- 4 x, -2 + 5 x^2}] is evaluated as<math> \sqrt{2} \frac{\sqrt{25x⁴ + 10x³ + 28x² - 18x + 3} \ } { \ 3 \ }<\math>.

Note:

@@ Line 15: / Line 15: @@
 :{{example|1=<div>
 :* <code><nowiki>SD[{1, 2, 3, 4, 5}]</nowiki></code> yields <math>\sqrt{2}</math>.
-:* <code><nowiki>SD[{-3 + 2 x, -1- 4 x, -2 + 5 x^2}]</nowiki></code>  is [[Evaluate Tool|evaluated]] as [[File:Tool Evaluate.gif]] \sqrt{2}  \frac{\sqrt{25x⁴ + 10x³ + 28x² - 18x + 3} \  } { \ 3 \ }. </div>}}
+:* <code><nowiki>SD[{-3 + 2 x, -1- 4 x, -2 + 5 x^2}]</nowiki></code>  is [[Evaluate Tool|evaluated]] as<math> \sqrt{2}  \frac{\sqrt{25x⁴ + 10x³ + 28x² - 18x + 3} \  } { \ 3 \ }<\math>. </div>}}
 :{{note|1=<div>See also [[Mean Command]].</div>}}