The variance (equal to the square of the standard deviation) is returned as a vector of m real numbers, or as a single real number if m = 1. The variances are computed using this formula:
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| n – 1 | i = 1 |
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| where xi is the ith coordinate value in a column, x is the mean of the data in this column, and n is | |||||
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Access: | …µVAR |
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Input/Output: |
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| Level 1/Argument 1 |
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| → | xvariance |
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| → | [ xvariance1, ..., xvariancem ] |
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See also: | MAXΣ, MEAN, MINΣ, PSDEV, PVAR, SDEV, TOT |
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| VARS | Command |
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Type: |
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Description: | Variables Command: Returns a list of the names of all variables in the VAR menu for the current | |||||
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Access: | !°MEMORY DIRECTORY LVARS | ( °is the | ||||
Input/Output: |
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| Level 1/Argument 1 |
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| → | { global1 ... globaln } |
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See also: | ORDER, PVARS, TVARS |
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| VER |
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Type: | Command |
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Description: Returns the Computer Algebra System version number, and date of release.
Access: Catalog, …µ
Input: No input required.
Output: A real number giving the version and release date of the Computer Algebra System software.
Flags: The version and release date are given as a number of the form V.YYYYMMDD, so a display mode showing at least 8 digits after the fraction mark is needed to display the result in full.
VERSIONType: Command
Description: Software Version Command: Displays the software version and copyright message.
Access: …µVERSION
Input/Output:
| Level 1/Argument 1 | Level 2/Item 1 | Level 1/Item 2 |
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| → | “version number” | “copyright message” |
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