# Free Data Handling 01 Practice Test - 4th Grade

### Question 1

Representation of data as rectangular bars with different lengths is called:

#### SOLUTION

Solution :A

A bar graph is a graph that presents data with rectangular bars with heights or lengths proportional to the values that they represent.

### Question 2

The initial data collected which is not organised is called:

#### SOLUTION

Solution :C

Raw data is data collected from one or many sources. It is data that has not been organised. It needs to be organised so that it can be used.

### Question 3

The figure shows the preferred flavour of popcorn among 20 persons.

How many people don’t have caramel as the favourite?

#### SOLUTION

Solution :B

On observing the bar graph, we see that

Total number of people who took the survey = (3 + 4+ 7+ 6) = 20

Number of people who like caramel flavour = 3

∴ Number of people who don't prefer caramel flavoured popcorn =20−3=17

### Question 4

Height of 12 boys (in cm) are :

143,144,141,145,147,144,142,145,149,151,147,143

What is the frequency of boys with a height of 143 cm?

#### SOLUTION

Solution :A

Arranging the heights of 12 boys in ascending order we get

141,142,143,143,144,144,145,145,147,147,149,151

The number of times a particular value of data occurs is known as frequency.

Here, we see there are 2 boys with height 143 cm.

Therefore, the frequency of boys with a height of 143 cm is 2.

### Question 5

What is the sum of black coloured and white coloured cars sold?

#### SOLUTION

Solution :B

On observing the table we see,

Number of black cars sold = 20

Number of white cars sold = 17∴ Total number of black and white cars sold = 20+17=37 cars

### Question 6

Find the frequency of symbol ‘-’:

** ×, ×, ÷, -, ×, +, +, ÷, ×, +, -, +, +, -, ÷, ×**

#### SOLUTION

Solution :C

The number of times a particular value of data occurs is known as frequency.

×, ×, ÷, -, ×, +, +, ÷, ×, +, -, +, +, -, ÷, ×

Here, we observed that symbol '-'is occurring thrice, therefore the frequency of '-' symbol is 3.

### Question 7

If others include 3 orange cars, 4 green cars and 2 purple cars, what is the difference between the number of red cars sold and number of green cars sold?

#### SOLUTION

Solution :C

On observing the data,

Given: Red cars = 15

Green cars = 4∴ Difference between red cars sold and green cars = 15−4=11 cars

### Question 8

The daily rainfall data recorded in a week is shown below. What is the total rainfall recorded on Thursday? (1 drop = 4 inches of rain)

#### SOLUTION

Solution :C

Given:

1 drop = 4 inches of rain

Rainfall recorded on Thursday = 11 drops

Therefore, the number of inches of rain on Thursday = 4×11=44 inches

### Question 9

The daily rainfall data recorded in a week is shown below. On which day of the week is the rainfall the highest? (1 drop = 1 inch rainfall)

#### SOLUTION

Solution :B

By observing the graph, (1 drop = 1 inch)

Rainfall recorded on Monday = 10 inches

Rainfall recorded on Tuesday = 06 inches

Rainfall recorded on Wednesday = 08 inches

Rainfall recorded on Thursday = 11 inches

Rainfall recorded on Friday = 07 inches

Rainfall recorded on Saturday = 04 inches

Rainfall recorded on Sunday = 09 inches

From above , we can see that Thursday had the heaviest rainfall.

### Question 10

Number of columns in the table given below is ______.

ItemQuantityPen25Pencil30Eraser18Sharpner21

#### SOLUTION

Solution :B

Data written vertically are called columns. Here, there are two vertical datas present under the name Item and Quantity. Thus, there are two columns present in the given table.