### NCERT Solutions for Class 6 Maths Chapter 9 Data Handling Ex 9.1

**Ex 9.1 Class 6 Maths Question 1.**

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

**(a) Find how many students obtained marks equal to or more than 7.**

**(b) How many students obtained marks below 4?**

**Solution:**

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.

**Ex 9.1 Class 6 Maths Question 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.**

**Arrange the names of sweets in a table using tally marks.**

**Which sweet is preferred by most of the students?**

**Solution:**

(a) We have the following table:

b) Ladoo is preferred by most of the students, i.e., 11 students.

**Ex 9.1 Class 6 Maths Question 3.**

**Catherine threw a dice 40 times and noted the number appearing each 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:**

We have the following table:

From the above table, we get

(a) The number 4 appeared 4 times which is the minimum.

(b) The number 5 appeared 11 times which is the maximum.

(c) The number 1 and 6 appear for the same number of times, i.e., 7.

**Ex 9.1 Class 6 Maths 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 tractors village C has as compared to village B?**

**(d) What is the total number of tractors in all. the five villages?**

**Solution:**

From the given pictograph, we have

(а) Village D has the minimum number of tractors, i.e., 3.

(б) Village C has the maximum number of tractors, i.e., 8.

(c) Village C has 3 tractors more than that of the village B.

(d) Total number of tractors in all the villages is 28.

**Ex 9.1 Class 6 Maths Question 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 the minimum number of girl students

i,e. 1 1/2 x 4 = 6.

(b) No, number of girls in Class VI = 4 x 4 = 16 and number of girls in Class V = 2 1/2 x 4 = 10

So, number of girl students in Class VI is not less than that of in Class V.

(c) Number of girls in Class VII = 3 x 4 = 12

**Ex 9.1 Class 6 Maths Question 6.**

**The sale 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 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:**

(a) Number of bulbs sold on Friday = 7 x 2 = 14

(b) On Sunday, the number of bulbs sold = 9 x 2 = 18 which is maximum in number.

(c) On Wednesday and Saturday, the same number of bulbs were sold, i.e., 4 x 2 = 8

(d) The minimum number of bulbs were sold on Wednesday and Saturday, i.e., 4 x 2 = 8

(e) Total number of bulbs sold in a week = 43

Number of cartons needed 5

= (43 x 2) ÷ 9 = 86 ÷ 9 = 9 5/9 = 10 cartons.

**Ex 9.1 Class 6 Maths Question 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:**

(a) Martin sold the maximum number of fruit baskets, i.e., 9 1/2 x 100 = 950

(c) Number of fruit baskets sold by Anwar is 7 x 100 = 700.

(c) Anwar, Martin and Ranjit Singh have sold 600 or more fruit baskets and planning to buy a godown.