This ballot is to provide a precision and bias statement for E1111. A round robin was conducted with four labs and one specimen. One lab was deemed by the task group to be an outlier based on a statistical outlier test developed by Dixon. The data from all laboratories will be presented in the associated research report. The articulation class derived by testing according to E1111 is the sum of the weighted nominal sound attenuations rounded to the nearest 10, at each of 6 positions in the room. Basing the statistics on the rounded values would be misleading so the unrounded values were used.
Date Initiated: 06-14-2019
Technical Contact: Robert Hallman
Item: 001
Ballot: E33.02 (20-01)
Status: Will Reballot Item
Item: 005
Ballot: E33 (19-03)
Status: Will Reballot Item
Item: 001
Ballot: E33 (21-04)
Status: Withdrawn From Balloting