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Toggle**NCERT Solutions for Class 6 Maths, Chapter 9, Data Handling, Exercise 9.1** involves study of tally charts and pictograph. A tally chart is used to count frequencies of the data and pictograph represents data in the form of pictures, objects or parts of objects. Exercise 9.1, Class 9, maths, Chapter 9 has total seven questions.

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

**Q.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?**

**Ans:**

(a) Twelve students obtained marks equal to or more than 7.

(b) Eight students obtained marks below 4.

**Q.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?**

**Ans:** (a) By observing the choice of sweets of 30 students. We may construct the table as shown below:

(b) Ladoo is the most preferred sweet among students because 11 students are preferred to eat.

**Q.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.**

**(a) The minimum number of times (b) The maximum number of times**

**(c) Find those numbers that appear an equal number of times.**

**Ans:**

(a) The minimum number of times = 4

(b) The maximum number of times = 5

(c) 1 and 6 are the numbers that appear an equal number of times.

**Q.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?**

**Ans: **(i) Village D has the minimum number of tractors.

(ii) Village C has the maximum number of tractors.

(iii) Village B has 5 tractors and Village C has 8 tractors

= 8 – 5 = 3 tractors

Village C has 3 more tractors as compared to village B.

(iv) Total number of tractors in all the five villages = 6 + 5 + 8 + 3 + 6 = 28 tractors

**Q.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?**

**Ans: **from given table, one face is equal to number of 4 girls. So, there are 24, 18, 20, 14, 10, 16, 12 and 6 girls respectively from class I to VIII

(a) Class VIII has the minimum number of girl students.

(b) No. Class V has 10 girl students and Class VI has 16 girl students.

(c) The number of girls in Class VII are 12 (3×4=12 girls).

**Q.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?**

**Ans:**

(a) Number of bulbs sold on Friday are 14 bulbs.

(b) Maximum number of bulbs were sold on Sunday i.e., 18 are sold.

(c) On Wednesday and Saturday 8 bulbs are sold.

(d) Minimum number of bulbs were sold on Wednesday and Saturday i.e., 8 bulbs.

(e) Total number of bulbs sold in a week = 12 + 16 + 8 + 10 + 14 + 8 + 18 = 86

If one big carton can hold 9 bulbs. Therefore, the number of carton required to hold 86 bulb $=\frac{86}{9}\approx 10$.

Hence, 10 cartons required to hold the bulbs.

**Q.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?**

**Ans:**

(a) Martin has sold the maximum number of baskets.

(b) 700 (7 x 100) fruit baskets were sold by Anwar.

(c) Anwar, Martin and Ranjit Singh are planning to buy a godown for the next season.

**Q.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?**

**Ans: **(a) Martin has sold the maximum number of baskets.

(b) 700 (7 x 100) fruit baskets were sold by Anwar.

(c) Anwar, Martin and Ranjit Singh are planning to buy a godown for the next season.