[" in each "],[" dass marks of a frequency distribution are "15,20,25,30,...],[" dass corresponding to the class mark "20" is "],[" (b) "17.5-22.5]" (c) "18.5-21.5" (d) "19.5-20.5

The class marks of a frequency distribution are 15, 20, 25, 30, ..... The class corresponding to the class mark 25 is

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

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

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

If the class marks of a continuous frequency distribution are 22, 30, 38, 46, 54, 62 then the class corresponding to class mark 46 is _____

(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.

Write the class mark of the class 19.5 - 29.5 .

Find the class mark of class 21.5 to 25.5