Patent ID: 8606617

Claim:
A computer-implemented method to acquire advertising-related data, comprising: receiving a population value and Cume values related to individual media stations based on predetermined rating parameters of the media stations, by executing program instructions in a computer system; identifying a set of multiple media stations that includes two or more of the individual media stations, by executing program instructions in the computer system; and computing a value, C, indicating a probability that a listener is listening to at least one media station in the set of multiple media stations for the set of multiple media stations according to the formula C=[ 1−Π i=1,n (1−( C i /P ))]* P where i denotes an individual media station, Π represents a product of a sequence of terms, n is the number of media stations in the set, P is the population value, and C i is a Cume value for each individual media station i in the set wherein Cume values for individual media stations are extended to multiple media stations, by executing program instructions in the computer system.