Confidence Range

The StreetLight InSight® confidence range--commonly referred to as a prediction interval in statistics--is an estimate, within a given probability, of an interval in which the future observations will fall.

We use a 90% confidence range for our Estimated AADT analysis, and the confidence range estimate predicts where the true AADT value of each zone falls with a 90% confidence/certainty. For example, if the AADT is predicted to be 45,000, the confidence range means that 90% of the time, the true AADT value will fall between 38,000 and 55,000 (-15%, 22%).This percentage range will differ for different Estimated AADT analyses.

Learn more about how to get and work with confidence ranges.

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