# CASE STUDY QUESTION 4-Class X-Maths

CASE STUDY QUESTION 4-Class X-Maths

**A group of students decided to make a project on Statistics. They are collecting the heights (in cm) of their 51 girls of Class X-A, B and C of their school. After collecting the data, they arranged the data in the following less than cumulative frequency distribution table form:**

**(a) What is the lower limit of median class?**

(i) 145 (ii) 150 (iii) 155 (iv) 160

**(b) What is the upper limit of modal class?**

(i) 145 (ii) 150 (iii) 155 (iv) 160

**(c) What is the mean of lower limits of median and modal class?**

(i) 145 (ii) 150 (iii) 155 (iv) 160

**(d) What is the width of the class?**

(i) 10 (ii) 15 (iii) 5 (iv) none of these

**(e) The median is :**

(i) 149.03 cm (ii) 146.03 cm

(iii) 147.03 cm (iv) 148.03 cm

**Answers:**

**a.** (i) 145

**b.** (ii) 150

**c.** (i) 145

**d.** (iii) 5

**e.** (i) 149.03 cm