CASE STUDY QUESTION 12-Class X-Maths

CASE STUDY QUESTION 12-Class X-Maths

A group of students went to another city to collect the data of monthly consumptions (in units) to complete their Statistics project. They prepare the following frequency distribution table from the collected data gives the monthly consumers of a locality.

(a) What is the lower limit of median class?
(i) 125 (ii) 145 (iii) 165 (iv) 185

(b) What is the lower limit of modal class?
(i) 125 (ii) 145 (iii) 165 (iv) 185
Ans: (i) 125

(c) What is the mean of upper limits of median and modal class?
(i) 125 (ii) 145 (iii) 165 (iv) 185
Ans: (ii) 145

(d) What is the width of the class?
(i) 10 (ii) 15 (iii) 20 (iv) 25
Ans: (iii) 20

(e) The median is :
(i) 137 (ii) 135 (iii) 125 (iv) 135.7