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4.1. Point of impact

In the centre, the orange circle represents the average PoI for all shots from all groups. Basically, it tells you how much off is your scope zero from the PoA (red circle).

The pale orange area around the average PoI is error margin. The error margin corresponds to 95% confidence, and, strictly speaking, means that if I shot an infinite number of similar projects, in 95% of the cases the true average PoI would be somewhere in this pale orange area (which may be different for each project).

In plain English, one can consider that the real PoI is *very* likely (statistically likely) to be within the error margins.

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Book | by Dr. Radut