1. A method of generating shopper traffic data, comprising: obtaining first in-person-based count data indicative of a first quantity of shoppers within a first zone of a monitored establishment; obtaining first sensor-based count data indicative of a second quantity of shoppers within the first zone of the monitored establishment; and determining a relationship value indicative of a relationship between the first in-person-based count data, the first sensor-based count data, and first sales data associated with the first zone of the monitored establishment.