The classes in a frequency distribution range from 110 to 170 with class interval being 10.

What is the Mid value of this Class Distribution?

Q. In a frequency distribution the mid value of a class is $15$ and the class interval is $4$. The lower limit of the class is

Q.

In a frequency distribution, the mid-value of a class is 15 and the class intervals is 4. The lower limit of the class is

Q. In a frequency distribution, the mid value of a class is 42 and the width of the class is 10, then the class interval is ________.

Q.

(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 lower limit of the class.
(iii) The width of each of five continuous classes in a frequency distribution is 5 and lower 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.

Q. In a frequency distribution, the mid-value of a class is 15 and the class intervals is 4. The lower limit of the class is

(a) 10

(b) 12

(c) 13

(d) 14