# Free Data Handling 02 Practice Test - 4th Grade

Data available in unorganized form is called :

A. Bar graph
B. Raw data
C. Information
D. Organised data

#### 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

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

A. Bar Graph
B. Pie Chart
C. Pictograph
D. Raw data

#### 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.

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 4C?

A. 4
B. 3
C. 2
D. 5

#### 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.

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.

A. 1
B. 2
C. 3
D. 4

#### 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.

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

A. False
B. True

#### 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.

Find the frequency of symbol ‘+’:
×, ×, ÷, -, ×, +, +, ÷, ×, +, -, +, +, -, ÷, ×

A. 3
B. 4
C. 5
D. 6

#### 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.

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?

A. 7
B. 8
C. 6
D. 5

#### 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.

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) A. 36 inches
B. 16 inches
C. 32 inches
D. 20 inches

#### SOLUTION

Solution : B

Given:
1 drop = 2 inches
Wednesday = 8 drops of rain

Therefore, inches of rain on Wednesday =2×8=16 inches

The daily rainfall data of a week is shown. What is the total rainfall on Saturday and Sunday? A. 56 inches
B. 52 inches
C. 68 inches
D. 64 inches

#### SOLUTION

Solution : B

Given:
1 drop = 4 inches of rain

Number 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

Number of rows in the table given below is ______.

ItemQuantityRasagulla25Gulab jamun30Ladoo18Vanilla cake21

A. 2
B. 5
C. 10
D. 8

#### 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.