According to Article 1 of the Constitution, how many representatives there are in Congress is determined by each state's population. A census is taken every 10 years to accurately apportion a state's representatives. The most basic calculation is there is to be one representative for every 30,000 residents. If there are not 30,000 people living in a state, that state will still get at least one representative.
Find the Class Width of the Frequency Table. The lower limit for every class is the smallest value in that class. On the other hand, the upper limit for every class is the greatest value in that class. The class width is the difference between the upper or lower class limits of consecutive classes. All classes should have the same class width. In this case, class width equals to the difference between the lower limits of the first two classes. Simplify to find that the class width is .
A simple GPA is the one first described. In it's easiest form, an A=4, B=3, C=2, D=1, F=0. For each class you have, you assign the correct number to the letter grade, add all of your grades together and divide by the number of classes you have taken.