If class marks is 20 and class width is 6. Find the class.

If class mark is 15 and class widht is 10, then find the class.

If the class mark is 15 and the class width is 4, then write the algebraic expressions to find the class.

(i)Find the class mark of the class 90-120. (ii)In a frequency distribution, the mid-value of the class is 10 and width of the class is 6. Find the lowe limit of the class. (iii)The width of each of the five continuous classes in a frequency distribution is 5 and lowe class limit of the lowest class is 10. What is the upper class limit of the highest class? (iv) The class marks of a frequency distribution are 15,20,25...... Find the class corresponding to the class mark 20. (v)In the class intervals 10-20, 20-30, find the class in which 20 is included.

In a frequency distribution table with 12 classes, the class-width is 2.5 and the lowest class boundary is 8.1, then what is the upper class boundary of the highest class?

Class mark of a particular class is 6.5 and class size is 3, then class interval is:

In a frequency distribution, the mid value of a class is 10 and the width of the class is 6. The lower limit of the class is

If a class mark of a class-interval 8.5. The class size is 5,then the class limits of the corresponding class-interval is

In a frequency distribution, the mid values of a class is 10 and width of the class is 6. The lower limit of the class is

The class mark of the class 90-120 is