Frequency Distribution Table

Q.

The class marks of a frequency distribution are given as follows: $15,20,25,..........$ The class corresponding to the class mark $20$ is:

1. $12.5-17.5$

2. $17.5-22.5$

3. $18.5-21.5$

4. $19.5-20.5$

Q. There is something called NEET level-2 in the module. What do you mean by NEET level-2?

Q.

Write the class-size of $10-19,20-29,30-39$