This article is part of The Definitive Guide to Uploading and Preparing Data.
Sometimes you need to create a net on multiple response variables.
A net in this scenario, is defined as "at least one mention of". In Crunch, you can do this by creating a new subvariable which is added to the overall multiple response variable.
When making nets like this, you need to be mindful where there are different levels of missing data amongst the contributing variables. Do you want the net to consider only the common sample (ie: with no missingness, or "complete cases") or do you want to consider the entire sample or only the sample that has at least one value that is non-missing? You should check your subvariable to ensure it has the desired level of missingness before combining it into an array.
In the web app
- It's possible to achieve this in the web app using a careful combination of features a) save a new variable that will be the net, and then b) include it into an array
- You can create a new variable using the Filter Builder.
- You can edit an existing multiple response variable using Edit Variable under the Variable Properties of the multiple response variable.
- Note: in doing this, at present, you cannot build the build by referring to same array that you want to add it to. You should go back to referring to source variables when building a new derivation.
- Coming soon