## CDF Confidence Band

The *confidence band* gives a confidence
region for the population distribution.
The critical values given by Feller (1948) for
the completely specified hypothesized distribution
are used to generate the confidence band.
All parameters in the hypothesized distribution are known.
The null hypothesis that the population distribution
is equal to a given completely specified distribution
is rejected if the hypothesized distribution falls
outside the confidence band at any point.
You specify the confidence coefficient in the cumulative
distribution options dialog or by choosing
**Curves:CDF Confidence Band**.

**Figure 38.27:** CDF Confidence Band Menu

Figure 38.28 displays an empirical
distribution function and a 95% confidence
band for the cumulative distribution function.
Use the **Coefficient** slider to change
the coefficient for the confidence band.

**Figure 38.28:** CDF Confidence Band

Copyright © 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.