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Julian runs a bookshop. The table shows the number of books purchased by each of his last 25 customers. 

Number of books 1 2 3 4 5 6 7 8 9 10
Number of customers 8 9 4 2 1 0 0 0 0 1

Calculate the median number of books purchased by these customers. 

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Important Questions on Data Handling

EASY
Using tally marks, which one of the following represents the number eight?
EASY

Following are the numbers of children in 25 families of a colony:

2,3,4,1,1,2,3,1,2,2,1,1,3,2,1,2,3,2,2,2,3,2,2,1,2

Organize the above data and answer the questions.

How many families have 2 children?

MEDIUM
The number of children in 25 families of a colony are give below:
2, 0, 2, 4, 2, 1, 3, 3, 1, 0, 2, 3, 4, 3, 1, 1, 1, 2, 2, 3, 2, 4, 1, 2, 2.

Represent the above data in the form of a frequency distribution table.
EASY

A die was thrown 30 times and the following scores were obtained:

4,1,3,2,6,2,4,2,1,2,3,6,2,6,4,2,1,4,1,2,5,4,2,2,5,4,3,2,5,6

Prepare a table using tally marks and answer the following question:

Which score has occurred the minimum number of times?

EASY

Following are the numbers of children in 25 families of a colony:

2,3,4,1,1,2,3,1,2,2,1,1,3,2,1,2,3,2,2,2,3,2,2,1,2

Organize the above data and answer the questions.

What is the most common number of children in a family of the colony?

EASY

Following are the numbers of children in 25 families of a colony:

2,3,4,1,1,2,3,1,2,2,1,1,3,2,1,2,3,2,2,2,3,2,2,1,2

Organize the above data and answer the question.

What is the minimum number of children in a family'?

MEDIUM

The lengths (to the nearest centimetre) of 30 carrots are given as follows:

15, 22, 21, 20, 22, 15, 15, 20, 20, 15, 20, 18, 20, 22, 21, 20, 21, 18, 21, 18, 20, 18, 21, 18,  22, 20, 15, 21, 18, 20 

Arrange the data given above in a table using tally marks and answer the following questions.

Which length of the carrots occur maximum number of times and minimum number of times?

MEDIUM
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.
EASY

In a readymade garments store, on a particular day the following sizes of shirts were sold.

32,36,32,38,40,44,40,38,40,32,42,40,40,38,34,36,38,34,40,40,40,34,40,42,44,42,40,40,44,40

Prepare a table using tally marks and answer the question given below:

Which shirt size had the minimum sale?

EASY

A die was thrown 24 times and the following scores were obtained:

3,5,6,2,5,2,4,2,1,2,3,6,1,2,5,4,2,2,5,4,3,2,5,6

Prepare a table using tally marks. Now, answer the following questions:

Which score has occurred the maximum number of times?

EASY

A die was thrown 24 times and the following scores were obtained:

3,5,6,2,5,2,4,2,1,2,3,6,1,2,5,4,2,2,5,4,3,2,5,6

Prepare a table using tally marks. Now, answer the following questions:

Which score has occurred the minimum number of times?

EASY

In a readymade garments store, on a particular day the following sizes of shirts were sold.

32,36,32,38,40,44,40,38,40,32,42,40,40,38,34,36,38,34,40,40,40,34,40,42,44,42,40,40,44,40

Prepare a table using tally marks and answer the questions given below:

Which shirt size had the maximum sale?

EASY

A die was thrown 30 times and the following scores were obtained:

4,1,3,2,6,2,4,2,1,2,3,6,2,6,4,2,1,4,1,2,5,4,2,2,5,4,3,2,5,6

Prepare a table using tally marks and answer the following question:

Which score has occurred the maximum number of times?

MEDIUM
The sale of shoes of various sizes at a shop on a particular day is given below:
6, 9, 8, 5, 5, 4, 9, 8, 5, 6, 9, 9, 7, 8, 9, 7, 6, 9, 8, 6, 7, 5, 8, 9, 4, 5, 8, 7.

Represent the above data in the form of a frequency distribution table.
EASY

A die was thrown 24 times and the following scores were obtained:

3,5,6,2,5,2,4,2,1,2,3,6,1,2,5,4,2,2,5,4,3,2,2,5,6

Prepare a table using tally marks. Now, answer the following questions:

Find the numbers that appear an equal number of times.

MEDIUM

Construct a frequency table for the following:

3, 2, 5, 4, 1, 3, 2, 2, 5, 3, 1, 2, 1, 1, 2, 2, 3, 4, 5, 3, 1, 2, 3.

MEDIUM
Construct a frequency table for the following:
7, 8, 6, 5, 6, 7, 7, 9, 8, 10, 7, 6, 7, 8, 8, 9, 10, 5, 7, 8, 7, 6.
EASY

Following are the numbers of children in 25 families of a colony:

2,3,4,1,1,2,3,1,2,2,1,1,3,2,1,2,3,2,2,2,3,2,2,1,2

Organize the above data and answer the questions.

What is the maximum number of children in a family?