Set up respondent weightings

Conjointly makes it easy to set up weightings for individual respondents. There are two ways of assigning weightings on Conjointly:

  • Categorical: respondents are assigned to a category and assigned a weighting based on that category.
  • Continuous: respondents are individually assigned a weight based on a formula.

Follow these steps to set up weightings in your report.

1. Add a new weighting scheme

Weighting can be found by navigating to the Weights tab. To generate a new weighting scheme, click on the Add scheme button then select Categorical or Continuous from the menu pop-up.

Adding a new scheme

2a. Setting up categorical weightings

Define weighting categories

The new weighting scheme generates with a single category - “Remaining respondents”. This category is a catch-all that will contain respondents that did not fall into any of the other categories.

To create a new category, click on Add category then select the rules that will define the category. Categories can be defined using:

  • Respondent information that is recorded by Conjointly such as device type and country
  • How respondents answered any additional questions
  • Any GET variables recorded for each respondent
  • Any Externally supplied variable uploaded to the report

Categories can also be defined by a combination of these rules.

Adding conditions

For categories that may overlap, respondents are assigned to categories based on the order of the categories.

For example, if the first category contained males and the second category contained respondents from the US, a respondent who was a male from the US would be placed in the first category.

You can change the order of categories by click-dragging them in the window.

Rearrange conditions

Assign weights

Once all the categories are defined, assign weights to each category by clicking on the scheme, and entering in weights for each of the categories. The weightings for categories must sum to 100%.

Assigning weights

2b. Setting up continuous weightings

Continuous weightings uses a formula to calculate weights for individual respondents. Continuous weightings are useful when you want respondents to be weighted by a numeric variable, such as age.

Set formula for continuous weights

3. Select segments to apply weights to

Weighting schemes can be set to only apply to specific segments. To select the segment, use the “Applies to:” dropdown. You can also set the scheme to apply to all respondents.

Set segments for weight scheme

4. Save weighting schemes

Once you have set up your desired weighting schemes, click on Save and apply these schemes

Save weighting schemes

5. Preview weighting schemes (optional)

You can preview the weighting schemes by clicking on Preview participant classification.

Preview weighting scheme

Application of weights in special cases

Weighting in monadic blocks

In monadic blocks, weights are applied to individual responses within a single stimulus. For instance, when weights for male and female respondents are set to 0.5, respectively, the results are calculated as if an equal number of men and women responded to each stimulus.

Weights applied within monadic blocks
When a monadic block shows each respondent all the stimuli, this is equivalent to the fact that the weights were not applied to the stimuli.

Weighting in time series

Weights are applied to each wave in time series analysis. The following example shows the changes in the time series data after the 0.25 and 0.75 weights for male and female respondents are applied to each wave.

Weights applied to timeseries

Weighting for individual preferences exported to Excel

Respondent weightings in Excel can be added to individual preferences exported from the platform.