Systematic random sampling. Systematic random sampling is done through some ordered criteria by choosing elements from a randomly arranged sampling frame. You can chose from every ânthâ element in a sample frame i.e. 10th, 15th, 20th and so on.
An associate or bachelor's degree is typically required to pursue employment as a diagnostic medical sonographer. Students also have the option to graduate with a degree in a related field, pursue a certificate program in diagnostic medical sonography and then receive on-the-job training.earn how to become a diagnostic medical sonographer. Research the job description, education and licensing requirements to find out how to start a career in medical sonography.
Ultra sound tech education. It takes two years to become an ultrasound technician. You will need an associateâs degree and then will need a certification or license depending on your state. You do not have to study sonography to get this job, though.Many sonographers graduate with nursing degrees or start as radiologic technologists.After they have been employed for a few years in those positions, their employer may provide them with on-the-job training.ighty percent earned between $44,900 and $88,490. Although this is not the highest paying two-year medical career, it does rank well in pay and has a lot of future growth. The BLS notes that it is expected to grow 44 percent from 2010 to 2020. This means that there will be an additional 23,400 more workers needed.