Difference between revisions of "Variance Command"
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:*<code><nowiki>Variance[{1, 2, a}]</nowiki></code> yields ''<math>\frac{2}{9} a^{2} - \frac{2}{3} a + \frac{2}{3}</math>''. | :*<code><nowiki>Variance[{1, 2, a}]</nowiki></code> yields ''<math>\frac{2}{9} a^{2} - \frac{2}{3} a + \frac{2}{3}</math>''. | ||
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Revision as of 19:00, 17 September 2017
- Variance[ <List of Raw Data> ]
- Calculates the variance of list elements.
- Example:
Variance[{1, 2, 3}]yields 0.67.
- Variance[ <List of Numbers>, <List of Frequencies> ]
- Calculates the variance of list elements, considering the frequencies.
- Example:
Variance[{1, 2, 3} , {1, 2, 1}]yields 0.5.
CAS Syntax
- Variance[ <List of Numbers> ]
- Calculates the variance of list elements. If the list contains undefined variables, it yields a formula for the variance.
- Examples:
Variance[{1, 2, a}]yields \frac{2}{9} a^{2} - \frac{2}{3} a + \frac{2}{3}.
