USGS Data Source
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Data Quality Assurance - Laboratory duplicates
This dataset includes data quality assurance information concerning the Relative Percent Difference (RPD) of laboratory duplicates. No laboratory duplicate information exists for 2010. The formula for calculating relative percent difference is: ABS(2*[(A-B)/(A+B)]). An RPD of less the 10% is considered acceptable.
| Author(s) |
Nicole M Herman-Mercer 
|
| Publication Date | 2016 |
| Beginning Date of Data | 2009 |
| Ending Date of Data | present |
| Data Contact | |
| DOI | http://dx.doi.org/10.5066/F77D2S7B |
| Citation | Herman-Mercer, N.M., 2016, Data Quality Assurance - Laboratory duplicates: U.S. Geological Survey data release, http://dx.doi.org/10.5066/F77D2S7B. |
| Metadata Contact | |
| Metadata Date | 2020-08-31 |
| Related Publication | There was no related primary publication associated with this data release. |
| Citations of these data | |
| Access | public |
| License | http://www.usa.gov/publicdomain/label/1.0/ |
Harvest Source: ScienceBase
Harvest Date: 2024-02-24T09:44:24.901Z
Harvest Date: 2024-02-24T09:44:24.901Z