Polyphase: radio listening and some problems in its measurement: an exploratory study
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12 years old ADULT WOMEN Average Daily Audience average daily cumulative Average Number Base is unweighted Beta Function call letters Chicago CHICAGO SAN FRANCISCO CIRCLE CUMULATIVE RADIO AUDIENCES Daily Average 6:00 Daily Average Quarter-Hour Day Daily Average Day of Week days between 6:00 Dial Position Diary Cooperator diary days Diary Keepers diary non-cooperation diary-keeper selection differences double-sampling dwelling units eligible estimates EXHIBIT formula Frequency Distribution household KABL KCBS KEWB KFRC KNBR KSFO KSOL listen at least media units medium Midnight Monday-Friday Daily Average National Analysts Note number of days number of quarter-hours observed old or older oversampled P.M. period P.M. today P.M. yesterday persons 12 POLYPHASE quarter-hours of listening reach and frequency recall relative error repeat audiences respondents San Francisco screening interviews Selection Rate Seven Day Daily Sex and Day STATION SHARES stratification stratum Teenagers unweighted number WBBM WCFL WJJD working-order WVON