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A constant sum question is a useful way of understanding how much value customers place on specific product features. A typical constant sum question will ask respondents to allocate 100 ‘points’ across each feature with the highest number being allocated to the most important feature and the lowest to the least important.
To add a constant sum question to your experiment, click on the “Additional Questions” tab, click the “Add Question” button at the bottom of the screen and select “Constant sum” from the table of options.
Below is an example output of a constant sum output. The graph shows the average number of points allocated to each option across all respondents.
You should use a constant sum question when:
If the main objective of your study is to identify and prioritise features of your product, we would recommend to use Generic Conjoint instead.
This question from our users was answered on 5 November 2019. If there is anything else you'd like to know, please do not hesitate to contact us.