Skip to main content

​
How a score is calculated

A quantitative indicator is calculated in one of two ways:
  • A named preset method applied to a single question. A well-established scoring approach, such as Net Promoter Score or a customer-satisfaction index, is run on the answers to one question.
  • A formula combining several questions. Multiple questions each contribute an input, and a formula combines them into one score.
In either case, the calculation is fixed once an indicator is published. A given indicator always scores the same way across every study that uses it. This is what makes results comparable across your own studies, and across organisations using the same indicator from the library (see Can funds or investors use voi across a portfolio?).

​
Thresholds: reading a score at a glance

A score on its own does not tell you whether it is good. Thresholds translate a raw score into performance bands, typically Poor, OK, and Good. These bands are shown on the indicator’s detail view in Analyse. Adjusting these bands changes only how a score is presented; it never changes the underlying number. This makes it safe to tune the bands to match what “good” means for your specific project, without affecting your data.

​
Charting a result

Each indicator has a default chart type, such as a gauge, a bar chart, or a histogram. voi chooses the default chart type to fit the kind of data the indicator produces. You can also switch to an alternative chart type for the same indicator in Analyse if a different view tells the story better.