Note: Cost per vote is the total amount raised by the candidate divided by the number of he or she received in the election. 1  The New York Times, Donald Trump Selects Senator Jeff Sessions for Attorney General, November 18, 2016. 2  Alabama GOP, 2016 Republican National Convention Delegates, accessed April 11, 2016.
Incidence. The basic incidence rate (sometimes called just incidence) is a measure of the frequency with which a disease occurs in a population over a period of time. The formula for calculating an incidence rate is: 1  The numerator (x). 2  should include only new cases of the disease that occurred during the specified period.
Measure, calculate, and draw in the refracted ray with the calculated angle of refraction. In each of these two example problems, the angle of refraction is the variable to be determined. The indices of refraction (n i and n r) are given and the angle of incidence can be measured.r = index of refraction of the refractive medium. This relationship between the angles of incidence and refraction and the indices of refraction of the two media is known as Snell's Law. Snell's law applies to the refraction of light in any situation, regardless of what the two media are.