filmov
tv
Learn About Weighting Data in SPSS With Data Example

Показать описание
In SPSS, weighting cases allows you to assign "importance" or "weight" to the cases in your dataset. Some situations where this can be useful include:
- Your data is in the form of counts (the number of occurrences) of factors or events. The "weight" is the number of occurrences.
- Your data requires adjustments to correct for over- or under-representation of certain characteristics in your sample. (This often happens with large surveys: a "weighting" variable is developed to adjust a sample's composition to be reflective of the population's composition, or to control for over- or under-reporting from a certain group.) The Pew Research Center often makes their raw survey data available online to the public. Many of these surveys include weighting as a part of the study methodology.
Weighting cases in SPSS works the same way for both situations.
Комментарии