If the lower limit, upper limit and class mark of a class are `a, b` and `x` respectively, then which of the following relation is true

If the upper and lower limits of a class are x and y respectively and l be the length of the class,then which of the following relation is true?

Find the lower limit of the median class

The lower limit of the class 60 - 69 is

Upper limit of class interval 75-85 is

Define: lower-class limit and upper class-limit

The upper limit of the class 30-40 is

Write upper and lower class limit of calss 27.5 to 30.5