Ncert Class 6 Math Data Handling Exercise 9.1

Data Handling Class 6 Ex. 8.4

New Ncert Class 6, Chapter 9 Math Free Solution.


Exercise 9.1

Question 1 :- In Mathematics-test, the following-marks were obtained by 40 students. Arrange these marks in a table using the tally-marks.

(a) Find how many students obtained marks equal to or more than 7.
(b) How many students obtained marks below 4?

Solution 1:- 

From the given data, we have the following table.

(a) Number of students who obtained marks equal to or more than 7 = 5 + 4 + 3 = 12
(b) Number of students who obtained marks below 4 = 2 + 3 + 3 = 8.

Question 2 :- Following is the choice of sweets of 30-students, Class VI.
Ladoo, Barfi, Ladoo, Jalebi, Ladoo, Rasgulla, Jalebi, Ladoo, Barfi, Rasgulla, Ladoo, Jalebi, Jalebi, Rasgulla, Ladoo, Rasgulla, Jalebi, Ladoo, Rasgulla, Ladoo, Ladoo, Barfi, Rasgulla, Rasgulla, Jalebi, Rasgulla, Ladoo, Rasgulla, Jalebi, Ladoo.

(a) Arrange the name of sweets in a table using tally-marks.
(b) Which sweet, preferred by most of the students?

Solution 2:-
(a) We have the following table :-

(b) 11 students, or the majority of the students, like the Ladoo.

Question 3 :- Catherine threw, dice 40-times and noted the number appearing each  of the time as shown below: 

Make a table and enter the data using tally-marks. Find the number, that appeared.
(а) The minimum number of times.
(b) The maximum number of times.
(c) Find-those-numbers; that appear an equal number of times.

Solution 3:-
We have the following table:

From the above table, we get
(a) The minimum numbers of times = 4;
(b) The maximum numbers of times = 5;
(c) The number 1 and 6 appear for the same number of times, i.e., 7.

Question 4 :- Following pictograph; shows the number of tractors in five-villages :

Observe the pictograph and answer the following questions :
(a) Which village has the minimum-number of tractors?
(b) Which village has the maximum-number of tractors?
(c) How many more tractor village C, has as compared to village B?
(d) What is the total number of tractors in all the five-villages?

Solution 4:-
From the given pictograph, we have
(а) Village-D; has the minimum-number of tractors, = 3;
(б) Village-C; has the maximum number of tractors, = 8;
(c) Village-C; has 3-tractor more than that of the village-B;
(d) The total number of tractors in all the villages is = 28.

Question 5 :- The number of girl-students in each-class of a co-educational-middle-school is depicted by the pictograph:

Observe this pictographs and answers the following questions:
(a) Which class has the minimum number of girl students?
(b) Is the number of girls in the Class-VI, less than the number of girls in Class-V?
(c) How many girls, are there in Class-VII?

Solution 5:-
(a) Class-VIII has the minimum-number of girl students = 1,(1/2) x 4 = 6;
(b) No, the number of girls in Class-VI; (4 x 4) = 16 and number of girls in Class-V; [2,(1/2) x 4] = 10
So, the number of girls student in Class-VI is not less than that of in Class-V.
(c) The number of girls, in Class-VII; (3 x 4) = 12.

Question 6 :- The sales of electric-bulbs, on different-days of a week is shown below:

Observe the pictograph; and answer the following-questions :
(a) How many bulbs were sold on Friday?
(b) On, which-day were the maximum-number of bulbs sold?
(c) On, which-day same number of bulbs were sold?
(d) On, which day minimum-number of bulbs were sold?
(e) If one big-carton can hold 9-bulbs. How many-cartons were needed in the given week?

Solution 6:-
(a) The number of bulbs sold on-Friday, (7 x 2) = 14;
(b) On-Sunday, the number of bulb sold, (9 x 2) = 18; which is maximum, in number;
(c) On, Wednesday and Saturday, the same-number of bulbs were sold, (4 x 2) = 8;
(d) The minimum-number of bulb were sold on Wednesday and Saturday, which is (4 x 2) = 8;
(e) Total number of bulbs-sold in a-week = 43;
Number of cartons needed = (43 x 2) ÷ 9 = 86 ÷ 9 = 9.56 = 10 cartons.

Question 7 :- In a village, six, fruit-merchants sold the following number of fruit-baskets in a particular season:

Observe this pictographs, and answer the following questions :
(a) Which merchant sold the maximum-number of baskets?
(b) How-many fruit-baskets were sold by Anwar?
(c) The merchants who have sold 600 or more number of baskets are planning to buy a godown for the next-season. Can you name-them?

Solution 7 :-
(a) Martin sold the maximum-number of fruit-baskets, 9,(1/2) x 100 = 950;
(b) Number of fruit-baskets, sold by Anwar, (7 x 100) = 700;
(c) Anwar, Martin, and Ranjit Singh aim to purchase a godown after selling 600 or more fruit baskets.




Chapter 9 Data Handling Class 6 Exercise. 9.1 for Free

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