Page 132 - Maths Class 06

White

Grey

From the pictograph, answer the following questions:

(a) How many white cars were sold?
(b) How many more black cars sold than blue cars?

(c) How many total cars were sold during the month?
SOLUTION : (a) 50 cars (b) 20 cars (c) 140 cars

Exercise 9.1

1. Following are the number of children in 20 families of a colony:
2, 3, 1, 2, 4, 3, 2, 2, 2, 1, 1, 4, 2, 3, 1, 1, 2, 2, 3, 1
Tabulate the above data using tally marks and answer the follow ing questions:

(a) What is the minimum number of children in a family?
(b) What is the maximum number of children in a family?
(c) What is the most common number of children in a family of the colony?
(d) How many families have 2 children?

2. The final marks in English test of 30 students are as follows:
53, 61, 48, 60, 78, 68, 55, 100, 67, 90, 75, 88, 77, 37, 84, 58, 60, 48, 62, 56, 44, 58, 52, 64, 98, 59,
70, 39, 50, 60
Now answer the following:
(a) Arrange these marks in the ascending order, 30 to 39 one group, 40 to 49 second group
etc.
(b) What is the highest score?
(c) What is the lowest score?

(d) If 40 is the passing mark how many students failed?
(e) How many students have scored less than 50?
3. The height of 20 students (in cm) is recorded as under:

117, 118, 125, 117, 115, 117, 114, 125, 118, 119, 115, 117, 117, 116, 117, 120, 120, 125, 125,
117

Prepare a frequency distri bution table for the above data.
4. The monthly electricity bill (in `) of 30 houses in a locality of Delhi are given below:
2044, 1055, 2044, 1056, 1055, 2046, 1056, 1055, 1055, 2044, 2048, 2218, 1578, 1056, 2046,
2048, 1476, 2044, 1055, 2001, 2033, 2255, 1056, 1055, 2046, 1056, 1055, 1055, 2044, 2048

132