Changing the confidence level

You can adjust the statistical calculations during a Positional Accuracy Assessment session by modifying the confidence level. This is the level of confidence for the evaluation layer. The value for this field can be 90, 95, or 99. The statistics are recalculated appropriately when this value is changed.

When the confidence level is changed, the statistics for the active points are automatically recalculated.

Steps:

1. Start a PAAT session.
2. Click the Show Results button on the Positional Accuracy Assessment toolbar.

   The Positional Accuracy Session Results dialog box appears.
3. In the Settings area of the Session Results tab, click the Confidence Level drop-down arrow to change the confidence level value.

   The confidence level is the degree of certainty of the final accuracy statistic, which is expressed as a percentage. You can choose 90, 95, or 99.

   The confidence level changes for the statistics.

4. Click Close.