Ncert Class 6 Mathematics Solutions Chapter 9 Data Handling
Welcome to NCTB Solutions. Here with this post we are going to help 6th class students for the Solutions of NCERT Class 6 Mathematics Book, Chapter 9, Data Handling. Here students can easily find step by step solutions of all the problems for Data Handling, Exercise 9.1 Also here our mathematics teacher’s are solved all the problems with easily understandable methods with proper guidance so that all the students can understand easily. Here in this post students will get chapter 9 solutions. Here all the solutions are based on NCERT latest syllabus.
Data Handling Exercise 9.1 Solution :
(1) In a Mathematics test, the following marks were obtained by 40 students. Arrange these marks in a table using tally marks.
8 1 3 7 6 5 5 4 4 2
4 9 5 3 7 1 6 5 2 7
7 3 8 4 2 8 9 5 8 6
7 4 5 6 9 6 4 4 6 6
(a) Find how many students obtained marks equal to or more than 7.
(b) How many students obtained marks below 4?
Solution :
| Mathematics : | Tally mark : | No of students : |
| 1 | II | 2 |
| 2 | III | 3 |
| 3 | III | 3 |
| 4 | IIII/ II | 7 |
| 5 | IIII/ I | 6 |
| 6 | IIII/ II | 7 |
| 7 | IIIII | 5 |
| 8 | IIII | 4 |
| 9 | III | 3 |
(i) Students got marks equal to or more than 7
= 5 + 4 + 3
= 12
(ii) No of students who got mark below 4
= 2 + 3 + 3
= 8
(2) Following is the choice of sweets of 30 students of 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 names of sweets in a table using tally marks.
(b) Which sweet is preferred by most of the students?
Solution :
(i) Required tally mark table :
| Sweets : | Tally marks : | Frequency : |
| Ladoo | IIII/ IIII/ II | 12 |
| Barfi | III | 3 |
| Jalebi | IIII/ I | 6 |
| Rasogulla | IIII/ IIII | 9 |
(ii) Ladoo, sweet is prefaced by most of the students.
(4) Following pictograph shows the number of tractors in five villages
Observe the pictograph and answer the following questions :
(i) Which village has the minimum number of tractors?
(ii) Which village has the maximum number of tractors?
(iii) How many more tractors village C has as compared to village B?
(iv) What is the total number of tractors in all the five villages?
Solution :
(i) Village D has the minimum number of tractors.
(ii) Village C has the maximum no of Tractors.
(iii) Village C has more tractors than village B.
= (8 – 5)
= 3
(iv) Total no of tractors in all five villages are,
= (6 + 5 + 8 + 3 + 6)
= 28
(5) The number of girl students in each class of a co-educational middle school is depicted by the pictograph :
Observe this pictograph and answer the following questions :
(a) Which class has the minimum number of girl students?
(b) Is the number of girls in Class VI less than the number of girls in Class V?
(c) How many girls are there in Class VII?
Solution :
(a) Class VIII has a minimum No of girl students.
(b) No, the No of girls in class VI is not less than the number of girls in Class V.
(c) In Class VII Total girls ,
= (3 × 4)
= 12
(6) The sale of electric bulbs on different days of a week is shown below :
| Days : | Number of bulbs : |
| Monday | 💡 💡 💡 💡 💡 |
| Tuesday | 💡 💡 💡 💡 💡 💡 💡 💡 |
| Wednesday | 💡 💡 💡 💡 |
| Thursday | 💡 💡 💡 💡 💡 |
| Friday | 💡 💡 💡 💡 💡 💡 💡 |
| Saturday | 💡 💡 💡 |
| Sunday | 💡 💡 💡 💡 💡💡 💡 💡 💡 |
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 of the days same number of bulbs were sold?
(d) On which of the days 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 :
(i) 1 figure = 2 bulbs
total no of bulbs sold on Friday = (7 × 2) bulbs
= 14 bulbs
(ii) From the pictograph in Sunday maximum no of bulbs were sold.
(iii) Total earing on Sunday
= (2 × 9 × 10) Rs
= 90 Rs × 2
= 180 Rs
(iv) Total earing of the week
= (43 × 2 × 10) Rs
= 860 Rs
(v) 1 carton hold 9 bulbs
For hold 86 bulbs required carton
= (86 × 9)
= 9 4/9
∴ More than 9 cartons are needed.
(7) In a village six fruit merchants sold the following number of fruit baskets in a particular season :
Observe this pictograph 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 :
(i) Merchant Name → Anwar.
(ii) Basket were sold by Rajinder Singh,
= (7 × 100 + 50)
= 750
(iii) Merchants are Anwar, Joseph and Rajinder Singh.
Next Chapter Solution :
👉 Chapter 10 👈
