METHODS AND APPARATUS TO DETERMINE A DURATION OF MEDIA PRESENTATION BASED ON TUNING SESSION DURATION

Methods, apparatus, systems and articles of manufacture are disclosed to monitor media presentation to determine a period of media presentation based on tuning session period are disclosed. Example methods disclosed herein include determining a first tuning session based on a period of time between channel changes of a first media presentation device, determining first presentation session data within the determined first tuning session, determining a model relating the first tuning session with the first presentation session data, determine a second tuning session for tuning data from a second media presentation device, selecting the model for the second tuning session, based on a match of a first duration of the second tuning session and a second duration associated with the model, and estimating second presentation session data for the second tuning session based on the model.