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INTERVALS Statement |

- approximate simultaneous prediction intervals for future observations
- prediction intervals for the mean of future observations
- approximate statistical tolerance intervals that contain at least a specified proportion of the population
- confidence intervals for the population mean
- prediction intervals for the standard deviation of future observations
- confidence intervals for the population standard deviation

These intervals are computed assuming the data are sampled from a normal population. See Hahn and Meeker (1991) for a detailed discussion of these intervals.

You can use options in the INTERVALS statement to

- specify which intervals to compute
- provide probability or confidence levels for intervals
- suppress printing of output tables
- create an output data set containing interval information
- specify interval type (one-sided lower, one-sided upper, or two-sided)

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