1. Observe the following table and answer the related questions:

The maximum frequency is

2. Observe the following table and answer the related questions:

The minimum frequency is

3. Observe the following table and answer the related questions:

The difference between maximum and mini-mum frequency is

4. Observe the following table and answer the related questions:

The ratio of the frequencies of blood groups AB and B is

5. Observe the following table and answer the related questions:

The ratio of the frequencies of blood groups B and O is

6. Observe the following pictograph and answer the related questions :

On which day were the maximum number of students present?

7. Observe the following pictograph and answer the related questions :

On which day were the minimum number of students present?

8. Observe the following pictograph and answer the related questions :

The number of students present on Friday is

9. Observe the following pictograph and answer the related questions :

On how many days were more than 20 stu-dents present?

10. Observe the following pictograph and answer the related questions :

On how many days were less than 20 students present?