Abstract: Methods, apparatus, and articles of manufacture are disclosed to correct age misattribution. Example disclosed apparatus includes an interface, machine readable instructions, and processor circuitry to at least one of instantiate or execute the machine readable instructions to transform audience measurement data to determine normalized training data, the training data including broad scores and targeted scores for a plurality of candidate models based on audience member records, identify validation scores associated with weighted averages of the broad scores and the targeted scores of the plurality of candidate models, select one of the plurality of candidate models to be an age-correction model based on the validation scores, and access a media impression received in a network communication from a server, the media impression including a reported age of a user associated with the media impression.

Abstract: Methods and apparatus to create a panel of media device users are disclosed. An example apparatus includes an interface to receive a unique identifier and an application identifier from a media device executing an instrumented application. A panel creator is to create a master frame corresponding to media devices that have executed the instrumented application. A registration data controller is to: (i) determine a skip rate, (ii) assign the media device from the master frame into a first test cell based on a random value and the skip rate, (iii) select a first recruitment interface associated with the first test cell, and (iv) instruct the instrumented application to, in response to the instrumented application being executed for a first time after a threshold period of time since an initial execution of the instrumented application has elapsed, display the first recruitment interface.

Abstract: Methods and apparatus to create a panel of media device users are disclosed. An example apparatus includes an interface to receive a unique identifier and an application identifier from a media device executing an instrumented application. A panel creator is to create a master frame corresponding to media devices that have executed the instrumented application. A registration data controller is to: (i) determine a skip rate, (ii) assign the media device from the master frame into a first test cell based on a random value and the skip rate, (iii) select a first recruitment interface associated with the first test cell, and (iv) instruct the instrumented application to, in response to the instrumented application being executed for a first time after a threshold period of time since an initial execution of the instrumented application has elapsed, display the first recruitment interface.

Abstract: Methods and apparatus to create a panel of media device users are disclosed. An example apparatus includes an interface to receive a unique identifier and an application identifier from a media device executing an instrumented application. A panel creator is to create a master frame corresponding to media devices that have executed the instrumented application. A registration data controller is to: (i) determine a skip rate, (ii) assign the media device from the master frame into a first test cell based on a random value and the skip rate, (iii) select a first recruitment interface associated with the first test cell, and (iv) instruct the instrumented application to, in response to the instrumented application being executed for a first time after a threshold period of time since an initial execution of the instrumented application has elapsed, display the first recruitment interface.

Abstract: Methods and apparatus to create a panel of media device users are disclosed. An example apparatus includes an interface to receive a unique identifier and an application identifier from a media device executing an instrumented application. A panel creator is to create a master frame corresponding to media devices that have executed the instrumented application. A registration data controller is to: (i) determine a skip rate, (ii) assign the media device from the master frame into a first test cell based on a random value and the skip rate, (iii) select a first recruitment interface associated with the first test cell, and (iv) instruct the instrumented application to, in response to the instrumented application being executed for a first time after a threshold period of time since an initial execution of the instrumented application has elapsed, display the first recruitment interface.

Abstract: Methods, apparatus, and articles of manufacture are disclosed to correct age misattribution. Example disclosed apparatus includes a model validator to determine respective broad scores and respective targeted scores for respective ones of a plurality of candidate models based on audience member records. A demographic retriever is to access a media impression received in a network communication from a first server, the media impression including a reported age of a user associated with the media impression. An age corrector is to determine a predicted age of the user with the selected age-correction model, and when an age misattribution error is non-zero, correct the age misattribution error in a reported age by assigning the predicted age to the media impression.

Abstract: Methods and apparatus to create a panel of media device users are disclosed. An example method includes instructing, from a central facility, a media provider to instrument an application with monitoring instructions. A unique identifier and an application identifier are received from a media device executing the monitoring instructions. A master frame corresponding to media devices that have executed the monitoring instructions is created. A skip rate representing a rate at which media devices in the master frame are to be selected to join the panel is determined. The media device is selected from the master frame based on a random value and the skip rate. The monitoring instructions associated with the selected media device are instructed to display a recruitment interface to a user associated with the selected media device requesting the user to join the panel.

Abstract: Methods and apparatus to create a panel of media device users are disclosed. An example method includes instructing, from a central facility, a media provider to instrument an application with monitoring instructions. A unique identifier and an application identifier are received from a media device executing the monitoring instructions. A master frame corresponding to media devices that have executed the monitoring instructions is created. A skip rate representing a rate at which media devices in the master frame are to be selected to join the panel is determined. The media device is selected from the master frame based on a random value and the skip rate. The monitoring instructions associated with the selected media device are instructed to display a recruitment interface to a user associated with the selected media device requesting the user to join the panel.

Abstract: Methods and apparatus to create a panel of media device users are disclosed. An example method includes identifying a master frame of media devices that have executed an instrumented application. A media device is selected from the master frame. A first instrumented application on the selected media device is instructed to display a recruitment interface to a user associated with the selected media device requesting the user to join the panel.

Abstract: Methods, apparatus, and articles of manufacture are disclosed to correct age misattribution. Example disclosed methods include, for a plurality of candidate models, determining a first score for the candidate model based on audience member records stored in a first memory, determining a second score for the candidate model based on the audience member records stored in the first memory; and determining a third score based on a weighted average of the first score and the second score, the third score representative of the accuracy of the corrective model. The example methods include selecting one of the plurality of candidate models to be an age-correction model based on the third score. The example methods include correcting, based on the selected age-correction model, an age associated with the media impression stored in a second memory, the media impression indicative of a person being exposed to media presented by a media presentation device.

Abstract: Methods and apparatus to create a panel of media device users are disclosed. An example method includes identifying a master frame of media devices that have executed an instrumented application. A media device is selected from the master frame. A first instrumented application on the selected media device is instructed to display a recruitment interface to a user associated with the selected media device requesting the user to join the panel.