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.