Patent attributes
Example methods, apparatus, systems and articles of manufacture to determine synthetic total audience ratings are disclosed. Disclosed example apparatus are to access census data including census viewing statements associated with media content presented by census devices, access panel data including panelist viewing statements associated with media content presented by panel devices, the panel data including weights to represent numbers of individuals to be represented by corresponding panelists, determine scores representing similarities between ones of a first group of census devices determined to having matching panel devices in the panel data and ones of a second group of census devices determined to be unmatched in the panel data, and assign the census devices to the panel devices based on the scores and the weights.