Transforming and recategorizing data This section describes how to use derived variables to recategorise and transform survey data into new variable types, for example: combine categories within a Multi Choice variable, and convert numeric, date and time and literal data into categories. Interactive tutorials Logical expressions for question routing and analysis [25m] Browse all interactive tutorials → Worksheets Calculating the difference between times on different dates Analysing dates Analysing post codes and zip codes Using patterns to categorise postcodes in to postal area Browse all worksheets → Online user guide and documentation Using derived variables Derived single variable Derived multiple variable Derived quantity variable Derived date variable Derived time variable Derived literal variable Categorising respondents by age and gender Categorising respondents by age and gender for a quota Categorising respondents by case number Categorising literals Categorising literals in Other field to add to multichoice list Adding text to a derived literal to create a readable list Using a derived variable with a pattern to categorise postcodes Categorising quantity responses with a derived variable Using derived variables to perform calculations Calculating age from a date of birth Calculate the interval between two times Categorising time responses into hourly periods Categorising date responses into six monthly periods Categorising date responses into days of the week Using a derived variable to weight the responses to a survey Using a derived variable to calculate mean scores Go to Snap help → Training and consultancy Our Analysing Results course will give you an introduction to using derived variables for analysis. If you would like one-to-one training, we also offer online or face-to-face consultancies. Call us now on 01454 280820603-610-8700 or email us your training requirementsemail us your training requirements and we’ll call you back. Go to Snap training →Go to Snap training → Couldn’t find what you were looking for? We’re working to add the resources you need to the Support Hub. If you think there’s a topic we should cover, please let us know by completing this form.