For a specific class interval, the minimum value is called the lower class limit and the maximum value is called the upper class limit.
For the interval 0 to 50 the upper class limit is 50.
For the interval 50 to 100 the upper class limit is 100.
For the interval 100 to 150 the upper class limit is 150.
For the interval 150 to 200 the upper class limit is 200.