A constant sum question allows you to divide specific number of points or percent as part of a total sum. Respondents can allocate the points or percent to each option as per their preffered weight/liking.A constant sum question permits collection of "ratio" data, meaning that the data is able to express the relative value or importance of the options (option A is twice as important as option B).
Go to: Login » Surveys (Select Survey) » Edit » Workspace and click on the Add Question button.Under Basic question types, select the Constant Sum question under the ordering group. Constant Sum question will be added to your survey. Under Settings you can control the Sum value as well as other settings. When answering the survey, respondents can allocate points either by entering in the text input boxes or using the slider.
This feature is available with the following licenses :