Arbitron Not Revising Puerto Rico Book
Diaries Returned From Media Household
January 6, 2010 at 10:03 AM (PT)
ARBITRON has discovered that three Summer 2009 PUERTO RICO Metro diaries were returned from a media-affiliated household. However, the ratings firm concluded that the inclusion of these diaries in the in-tab sample had a very limited practical effect on the utility of reported audience estimates.
Reported listening in the diaries was distributed among multiple stations, each owned by a different party. Each station recorded in the diaries ranked outside the top-25 stations for SUMMER 2009 in key demos (Persons 18-34 and Persons 25-54, ranked on Metro AQH Persons, MONDAY-SUNDAY 6AM-Midnight).
Given this limited effect on the utility of the estimates, and the limited utility that would be derived from revised estimates, ARBITRON will not be issuing revised SUMMER 2009 audience estimates.
ARBITRON reiterated the importance of adhering to its Diary Security and Media Affiliation guidelines. The company emphasized that it should be notified immediately whenever a station employee discovers that a household member has participated or agreed to participate as a diarykeeper.