# Free Data Handling 02 Practice Test - 4th Grade

### Question 1

Data available in unorganized form is called :

#### SOLUTION

Solution :B

Raw data is the data that has not been organised well enough for use.

Example:

Given below are the marks (out of 25) obtained by 10 students of class (V A)in mathematics in a test.

18, 16, 12, 10, 5, 5, 4, 19, 20, 10

### Question 2

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

#### SOLUTION

Solution :A

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

### Question 3

The temperature of a certain place, recorded for ten days (in ∘C) is as follows:6,8,0,3,2,0,1,5,4,4

How many days had a temperature of less than 4∘C?

#### SOLUTION

Solution :D

Arranging the data in ascending order, we get, 0,0,1,2,3,4,4,5,6,8.

On observing, there are 5 days(0,0,1,2,3) that had a temperature of less than 4° C.

### Question 4

Find the frequency of "K"in the given data set:

K, J, F, J, A, J, N, S, A, J, A, W, P, J, A, H, A, P, O, W, J, K, Z.

#### SOLUTION

Solution :B

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

Here, in the given data set:

K, J, F, J, A, J, N, S, A, J, A, W, P, J, A, H, A, P, O, W, J, K, Z.we observe that K is occurring twice, therefore the frequency of K is 2.

### Question 5

In a bar graph, the distance between two bars may not be the same.

#### SOLUTION

Solution :A

In a bar graph, we follow these rules

1)The width of the bars should be uniform throughout.

2)The gap between one bar and another should be equal throughout.

### Question 6

Find the frequency of symbol ‘+’:

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

#### SOLUTION

Solution :C

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

Given:

×, ×, ÷, -, ×, +, +, ÷, ×, +, -, +, +, -, ÷, ×We observe that the '

+'symbol is occurring 5 times and therefore the frequency of+is 5.

### Question 7

The number of members in 20 families are given as follows:

4,6,5,5,4,6,3,3,5,5,3,5,4,4,6,7,3,5,5,7

How many families have less than 5 members?

#### SOLUTION

Solution :B

4, 6, 5, 5, 4, 6, 3, 3, 5, 5, 3, 5, 4, 4, 6, 7, 3, 5, 5, 7

Here, we see the number of families with 3 members is 4 and with 4 members is also 4.

So, the number of families with less than 5 members is 8.

### Question 8

The daily rainfall data of a week is shown below. What is the total amount of rainfall on Wednesday? (1 drop = 2 inches of rain)

#### SOLUTION

Solution :B

Given:

1 drop = 2 inches

Wednesday = 8 drops of rainTherefore, inches of rain on Wednesday =2×8=16 inches

### Question 9

The daily rainfall data of a week is shown. What is the total rainfall on Saturday and Sunday?

#### SOLUTION

Solution :B

Given:

1 drop = 4 inches of rainNumber of drops on Saturday = 4 drops

Number of drops on Sunday = 9 drops

Therefore inches of rain on Saturday and Sunday

=(4+9)×4

=13×4=52 inches

### Question 10

Number of rows in the table given below is ______.

ItemQuantityRasagulla25Gulab jamun30Ladoo18Vanilla cake21

#### SOLUTION

Solution :B

Data written horizontally are called rows.

From this table, we figure out that 4 different sweet items are given with 1 row for the header.

Thus, there are totally five rows present in the given table.