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High Density Interval (HDI)

In marketing analytics, a High Density Interval is a statistical range that shows where most likely values for a measurement lie. It is often used in predictive models to describe uncertainty.

For example, if conversion rates are predicted between 3% and 5% with 90% certainty, that range is the HDI. Marketers use HDI to make informed decisions despite data uncertainty. It shows not just an average but a likely range, helping teams understand risks and probabilities in campaigns.