Page 144 - Maths Skill - 6

142 Maths

Let’s Attempt

Example 1: Given below are the ages of 25 students of Class VI in a school. Prepare a discrete frequency
distribution table.

16, 14, 14, 16, 17, 15, 17, 17, 16, 15, 14, 14, 15, 16, 15, 15, 16, 16, 15, 16, 15, 16, 16, 16, 15
Solution: Arranging the data in descending order. We get,
17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14

Age Tally Marks Frequency
14 4
15 8
16 10
17 3
Total 25

Example 2: Form a discrete frequency distribution from the following scores.

15, 18, 16, 20, 25, 24, 25, 20, 16, 15, 18, 18, 16, 24, 15, 20, 28, 30, 27, 16, 24, 25, 20, 18, 28, 27,
25, 24, 24, 18, 18, 25, 20, 16, 15, 20, 27, 28, 29, 16

Solution: Frequency distribution of scores

Variate Tally Marks Frequency

15 |||| 4
16 | 6
18 | 6
20 | 6
24 5
25 5
27 ||| 3
28 ||| 3
29 | 1
30 | 1
Total 40

Exercise 10.1

1. What is data?

2. Study the following frequency table then give the following answers. Items No. of Items
(i) Which item is the least popular? Apple juice 4 bottles
8 bottles
Mixed fruit
(ii) Name two items whose popularity is same. Guava juice 7 bottles
(iii) Which item is the most popular? Orange juice 7 bottles
Mango juice 2 bottles