Users can apply weight to their analysis to get weighted scores. Only numeric questions can be used to apply weights to an analysis. That means you can create a numeric question in your survey in which you can specify weights.
To apply weight on an analysis, click on Weighting tab and click on Weight.
A pop-up will appear displaying all the numeric type questions in your survey. Choose the required Weight question you wish to apply to your analysis and click on Select.
The weight will get applied to your analysis.
Note: Once weight is applied users can also remove weight by clicking on Remove Weighting.