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| en:create:functions:valuevar [24.01.2015 17:05] – alexander.ritter | en:create:functions:valuevar [24.01.2015 17:13] (current) – alexander.ritter |
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| ''float **valueVar**(array //variables//)'' | ''float **valueVar**(array //variables//)'' |
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| Calculates the biased [[http://en.wikipedia.org/wiki/Variance#Sample_variance|sample variance]] for the answer codes of all items in a question (e.g. a scale), for selected items, or for a list of variables. | Calculates the uncorrected [[http://en.wikipedia.org/wiki/Bias_of_an_estimator#Sample_variance|sample variance]] for the answer codes of all items in a question (e.g. a scale), for selected items, or for a list of variables. |
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| * //question// -- ID of a question (as a string) | * //question// -- ID of a question (as a string) |
| * //variables// -- A list (array) of variable IDs as written in the **Variables Overview** | * //variables// -- A list (array) of variable IDs as written in the **Variables Overview** |
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| **Note:** This works in the same way as ''[[:en:create:functions:valuesum|valueSum()]]'' -- the parameters are described in detail in this chapter with various examples. | **Note:** This works in the same way as ''[[:en:create:functions:valuesum|valueSum()]]'' -- the parameters are described in this chapter in detail with various examples. |
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