Uses estimates from historical ODIS/RPW mail population Anonymous deposit of test pieces Designed to be +/- 2 percent at the 95 percent confidence interval Consistent measurement methods and Includes all 3-Digit ZIP Representativeness Yes Not Stated Codes Random sampling of data records Weekly monitoring of key Accuracy No 3rd party metrics Monitor receiver performance Margins of error at +/- 1 percent at 95 percent confidence interval for Presort First-Class Mail and Standard Mail Reliability Yes 3rd party Margins of error at +/- 2 percent at 95 percent confidence interval for Periodicals and Bound Printed Matter Flats Receivers have been selected to represent ZIP Representativeness Yes 3rd party within each postal district EDW system verifies the Accuracy extracts sent from PTS Yes Internal system are complete Data captured are Reliability Yes Not Stated replicated event for event PTS Records all scan events captured on First-Class Mail Representativeness Parcels and Standard Mail Yes Internal Parcels with a trackable service feature Manual verification processes Quality checks Accuracy No 3rd party Verifying volume and SASP percent of mailpieces in measurement by Compare current data to Reliability No 3rd party SPLY data
Uses estimates from historical ODIS/RPW mail population Anonymous deposit of test pieces Designed to be +/- 2 percent at the 95 percent confidence interval Consistent measurement methods and Representativeness Includes all 3-Digit ZIP Codes Yes Not Stated Accuracy Random sampling of data records Weekly monitoring of key metrics Monitor receiver performance No 3rd party Reliability Margins of error at +/- 1 percent at 95 percent confidence interval for Presort First-Class Mail and Standard Mail Margins of error at +/- 2 percent at 95 percent confidence interval for Periodicals and Bound Printed Matter Flats Yes 3rd party Representativeness Receivers have been selected to represent ZIP within each postal district Yes 3rd party PTS Accuracy EDW system verifies the extracts sent from PTS system are complete Yes Internal Reliability Data captured are replicated event for event Yes Not Stated Representativeness Records all scan events captured on First-Class Mail Parcels and Standard Mail Parcels with a trackable service feature Yes Internal SASP Accuracy Manual verification processes Quality checks Verifying volume and percent of mailpieces in measurement by No 3rd party Reliability Compare current data to SPLY data No 3rd party
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