# Free Data Handling 03 Practice Test - 8th Grade

Find the probability of getting an ace from a well-shuffled deck of 52 playing cards?

A.

19

B.

16

C.

113

D.

152

#### SOLUTION

Solution : C

Number of aces =  4

Total number of cards = 52

Probability of getting an ace
=No. of acesTotal no. of cards
=452
=113

If a die is thrown, what is the probability of getting a multiple of 3?

A.

13

B.

12

C.

16

D.

0

#### SOLUTION

Solution : A

If a die is thrown then the outcomes which are multiple of 3 are 3 and 6.

So the probability of getting 3 and 6
=Outcomes of interestTotal number of outcomes
=26 = 13

A bag contains 1 red ball 1 green ball 2 blue balls and 1 black ball. If a ball is drawn out of the bag, the probability of getting a ball of each colour is equally likely.

A.

True

B.

False

#### SOLUTION

Solution : B

Probability=no. of favorable outcomestotal no. of outcomes

Therefore, the probability of getting a blue ball =25

While the probability of getting a black ball =15
Also, the probabiltiy of getting a green ball =15

So the events are not equally likely.

The number of students who have scored between 80-90 marks is

___ #### SOLUTION

Solution :

From the given histogram, it can be observed that 2 divisions on the y-axis correspond to 1 student.
Hence, the number of students scoring between 80-90 = 13

The histogram gives the information about the number of literate males along with their age. Below the age of 30, how many males are literate? A. 1400
B. 1300
C. 1900
D. 900

#### SOLUTION

Solution : D

Below the age of 30, the following the frequencies in the different age groups:
10-20 years: 300 literate males
20-30 years: 600 literate males
Therefore, the required number is 300+600 = 900

A set of numerical facts, collected with a definite object in view, is known as

A. Range
B. Frequency
C. Data
D. Tally marks

#### SOLUTION

Solution : C

A set of numerical facts, collected with a definite object in view, is known as data.

In a bar graph, the heights of the bars are proportional to the respective frequencies of the different categories.

A.

True

B.

False

#### SOLUTION

Solution : A

A bar graph displays information using bars of uniform width and their heights being proportional to the respective frequencies. Thus, the above statement is true.

The chart shows the number of sunny days and the number of windy days in six months. Which months had more windy days than sunny days? A.

MAY

B.

JUNE

C.

AUG

D.

OCT

#### SOLUTION

Solution : A and D

This is a double bar graph where the bars for sunny days and windy days are shown with different colours. The length of the bars represents the number of days. From the graph, it is evident that MAY and OCT have more windy days than sunny days.

If 1100 people like playing cricket, then what is the total number of people who took the survey? Following pie chart shows the percentage of people playing some game. A.

2000

B.

1000

C.

5000

D.

None of these

#### SOLUTION

Solution : A

Let the total number of people surveyed is x.

Given that 55%  of all the people surveyed play cricket.

So, 55% of  x= 1100.

55x100=1100

x=1100×10055
x=2000

Hence there are 2000 people were surveyed..

There are 216 workers in a factory out of which 75 are laborers. What would be the central angle of the sector representing laborers in a pie chart?

A.

360

B.

180

C.

125

D.

120

#### SOLUTION

Solution : C

Central angle
=no. of laborersno. of workers×360
=75216×360
=125