’ Both methods have their strengths and weaknesses.
Qualitative approaches are good for further exploring the effects and unintended consequences of a program.
For numeric fields, there is a convenient way to validate a value range, but we want to select to run a custom validation script.
After the “Edit” button is clicked, a new window will open that allows us to edit the new script: This script also includes a check for an empty string, so that the user can wipe out a wrong string and start from scratch.
But secondary data are those which have already been collected. It is collected either by the investigator himself or through his agents.