Method Codes for Summary Calclations

AVG Value is average of selected values. Selected values are computed with the following algorithm:
  1. Estimates of the mean and standard deviation are computed.
  2. Values greater than three standard deviations from the mean are excluded.
  3. If values have been excluded, the process is repeated with estimates based on the remaining values.
The given error range corresponds to 1.96 times the final estimate of the standard deviation.
RNG Value is range of available values.

© 2016 by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

Copyright for NIST Standard Reference Data is governed by the Standard Reference Data Act.

If you have comments or questions about this site, please contact us.