How the Affordable Care Act Affects Tobacco Use and Control / 2. â¢ Through a government program such as Medicare (for people age 65 and older and for. people under age 65 with certain disabilities) or Medicaid (for low-income people). â¢ By purchasing an individual policy for yourself or family directly from a private.
A field of applied statistics of human research surveys, survey methodology studies the sampling of individual units from a population and the associated survey data collection techniques, such as questionnaire construction and methods for improving the number and accuracy of responses to surveys.
A longitudinal study and a cross-sectional study are methods of collecting scientific data.A longitudinal study is the method that gathers data on a subject for a particular period of time and the subject's response to particular variables.A cross-sectional study is where more than one subject is used for the collection of data at different points in time in response to particular variables.These types of studies are sometimes used to determine correlation. longitudinal study and a cross-sectional study are methods of collecting scientific data.