Applying Weighting to the Data

You can apply weighting to the data presented in the Instant Analytics report to adjust the data presented in the report such that it reflects the "real world" situation. IA will only support one weight model, and this must be specially created and named for IA. In the IA report, the weighting will only be applied to the data displayed in the Responses tab. When the report is initially opened, the default setting will be that no weighting is applied to the data.

To create a weight model for use with Instant Analytics:

1. When in the survey, go to the Reporting > Weighting menu item.

The Weight Model List page opens.

2. Create a new weight model (go to Creating a New Weight Model for more information), and name the model IAWeight.

Important
The Instant Analytics functionality will only recognize the weight model if the model is named correctly.
Only the name of the weight model can be IAWeight; the weight model ID must be different and must be in all lower case. If you also use the weight model name as the weight model ID then an error will be generated.

3. After setting the weight model up as required, launch/re-launch the survey.

To apply the weight model to the data in the report:

4. Open the IA report and go to the Responses tab.
5. Go to the Settings menu.

If the survey has a weight model for use with the IA report (the model must be named IAWeight), then the option Show weighted data will be available in the menu - . If no IA weight model is available, the menu option will not be listed.



Figure 1 - The Settings menu when a weight model is available

6. Select the Show weighted data option.

The report is updated and the weighted data is displayed.

You can save the weighted and unweighted versions of the report under different names. To do this, display the data as required (weighted or unweighted), click the down-arrow beside the Save button, select Save As and give the report a suitable name.