Answer the following questions based on the frequency polygon given in the figure.
`i`. Write frequency of the class `50-60`.
`ii` State the class whose frequency is `14`.
`iii`. State the class whose class mark is `55`.
`iv`. Write the class in which the frequency is maximum.
`v`. Write the classes whose frequencies are zero.

Consider the following distribution: The frequency of the class 30-40 is

Consider the following distribution Frequency of the class 30-40 is

The class which has maximum frequency is known as

Write the modal class for the following frequency distribution.

If the greater than cumulative frequency of a class is 60 and that of the next class is 40 , then find the frequency of that class .

Consider the following distribution: The frequency of the class 10 -15 is _________.

Frequency density of a class is computed by the ratio

For the following frequency distribution The upper limit of median class is

Consider the following frequency distribution What is the median class?

Observe the following frequency polygon and write the answers of the questions below it. i . Which class has the maximum number of students? ii . Write the classes having zero frequency. iii . What is the class mark of the class, having frequency of 50 students ? iv . Write the lower and upper class limits of the class whose class mark is 85 . v . How many students are in the class 80-90 ?