Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision |
en:create:functions:valuesd [24.01.2015 16:28] – [Examples] alexander.ritter | en:create:functions:valuesd [24.01.2015 16:32] – [Examples] alexander.ritter |
---|
===== Examples ===== | ===== Examples ===== |
| |
The following PHP code identifies participants who always selected the same value (straight-lining) in the scale "AB01". It sends then immediately to the end of the questionnaire. | The following PHP code identifies participants who always selected the same value (straight-lining) in the scale "AB01", and sends them to the end of the questionnaire immediately. |
| |
| |
</code> | </code> |
| |
**Note:** Standard deviation of a scale is not a valid indication of data quality in a questionnaire. ((Leiner, Dominik J. (2014). Too Fast, Too Straight, Too Weird. Post Hoc Identification of Meaningless Data in Internet Surveys. Available on https://www.researchgate.net/publication/258997762)). Only use the examples above with utmost caution. | **Note:** The standard deviation of a scale is not a valid indication of data quality in a questionnaire. ((Leiner, Dominik J. (2014). Too Fast, Too Straight, Too Weird. Post Hoc Identification of Meaningless Data in Internet Surveys. Available on https://www.researchgate.net/publication/258997762)). Only use the examples above with the utmost caution. |
| |