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Olympiad Test: Data Handling - Grade 8 MCQ


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20 Questions MCQ Test Mathematics for Grade 8 - Olympiad Test: Data Handling

Olympiad Test: Data Handling for Grade 8 2024 is part of Mathematics for Grade 8 preparation. The Olympiad Test: Data Handling questions and answers have been prepared according to the Grade 8 exam syllabus.The Olympiad Test: Data Handling MCQs are made for Grade 8 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Data Handling below.
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Olympiad Test: Data Handling - Question 1

Read the table given above and answer the following questions.

Frequency distribution of daily income of 550 workers of a factory is given bellow

Q. What is the frequency of class intervals 125-150 ?

Detailed Solution for Olympiad Test: Data Handling - Question 1

Class size = [Upper class limit] - [Lower class limit] = 150 - 125 = 25.

Olympiad Test: Data Handling - Question 2

Frequency distribution of daily income of 550 workers of a factory is given bellow

Q. Which class has the highest frequency ?

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Olympiad Test: Data Handling - Question 3

Frequency distribution of daily income of 550 workers of a factory is given bellow

Q. Which class has the lowest frequency ?

Olympiad Test: Data Handling - Question 4

Frequency distribution of daily income of 550 workers of a factory is given bellow

Q. What is the upper limit of the class interval 250-275?

Olympiad Test: Data Handling - Question 5

Frequency distribution of daily income of 550 workers of a factory is given bellow

Q. Which two classes have the same frequency?

Detailed Solution for Olympiad Test: Data Handling - Question 5

The classes (150–175) and (225-250) are having the same frequency (which is 55).

Olympiad Test: Data Handling - Question 6

The number of hours for which students of particular class watched television during holidays is shown through the graph given below:

Q. For how many hours did the maximum number of students watch TV?

Detailed Solution for Olympiad Test: Data Handling - Question 6

From the graph, it can be observed that the maximum number of students (i.e., 32) watched TV for 4 − 5 hours.

Olympiad Test: Data Handling - Question 7

The number of hours for which students of particular class watched television during holidays is shown through the graph given below:

Q. How many students watched TV for less than 4 hrs ?

Detailed Solution for Olympiad Test: Data Handling - Question 7

Number of students watching TV for less than 4 hours = 4 + 8 + 22 = 34

Olympiad Test: Data Handling - Question 8

The number of hours for which students of particular class watched television during holidays is shown through the graph given below:

Q. How many students spent more than 5 hrs in TV watching ?

Detailed Solution for Olympiad Test: Data Handling - Question 8

14 students spent more than 5 hours in watching TV.

 

The number of students who watched TV for >5 hours =  number of students who watched TV for (5 – 6 hours) + (6 – 7 hours).

So the no. of students = 8 + 6 = 14

Olympiad Test: Data Handling - Question 9

The number of hours for which students of particular class watched television during holidays is shown through the graph given below:

Q. For how many hours did the minimum number of students watch TV ?

Olympiad Test: Data Handling - Question 10

The number of hours for which students of particular class watched television during holidays is shown through the graph given below:

Q. How many students spent more than 5 hrs in TV watching ?

Detailed Solution for Olympiad Test: Data Handling - Question 10

The students who watched TV for more than 5 hours:
Category:
5−6 or 6−7 hours
∴ Total number of students: 8+6=14

Olympiad Test: Data Handling - Question 11

Which of the following is the probability of an impossible event?

Olympiad Test: Data Handling - Question 12

Adjoining pie-chart gives the expenditure (in %age) on various items and savings of a family during a month .

Q. On which item the expenditure was minimum ?

Olympiad Test: Data Handling - Question 13

A coin is tossed. Which of the following is the probability of getting a head or tail?

Detailed Solution for Olympiad Test: Data Handling - Question 13
The probability of getting heads or tails when a coin is tossed is 1 Result 0-neither tails nor heads 1/2-1/2heads and 1/2tails.
Olympiad Test: Data Handling - Question 14

Adjoining pie-chart gives the expenditure (in %age) on various items and savings of a family during a month .

Q. If the monthly savings of the family is Rs 3000, What is the monthly expenditure on cloths ?

Detailed Solution for Olympiad Test: Data Handling - Question 14

Savings =15% = 3000

Clothes = 10% = (3000/15)*10 = 2000

 

Olympiad Test: Data Handling - Question 15

The range of the data: 6,14,20,16,6,5,4,18,25,15, and 5 is

Detailed Solution for Olympiad Test: Data Handling - Question 15

The option which is choosed is correct because

range=Highest observation -  Lowest observation.

so here in the given question highest observation is 25 and the lowest observation is 4 if we subtract it we will get 21

Olympiad Test: Data Handling - Question 16

Numbers 1 to 10 are written on ten separates slips (one number on one slip), kept in a box and mixed well. One slip is chosen from the box without looking in to it .

Q. What is the probability of getting a number 6?

Olympiad Test: Data Handling - Question 17

Numbers 1 to 10 are written on ten separates slips (one number on one slip), kept in a box and mixed well. One slip is chosen from the box without looking in to it.

Q. What is the probability of getting a number less than 6?

Olympiad Test: Data Handling - Question 18

Numbers 1 to 10 are written on ten separates slips (one number on one slip), kept in a box and mixed well. One slip is chosen from the box without looking in to it.

Q. What is the probability of getting a number greater than 6?

Olympiad Test: Data Handling - Question 19

Numbers 1 to 10 are written on ten separates slips (one number on one slip), kept in a box and mixed well. One slip is chosen from the box without looking in to it.

Q. What is the probability of getting a 1-digit number ?

Detailed Solution for Olympiad Test: Data Handling - Question 19
There are 9 one digit numbers out of 10 numbers ( 1 to 10 ). So probability of getting a one digit number is 9/10
Olympiad Test: Data Handling - Question 20

Numbers 1 to 10 are written on ten separates slips (one number on one slip), kept in a box and mixed well. One slip is chosen from the box without looking in to it.

Q. What is the probability of getting an even number ?

Detailed Solution for Olympiad Test: Data Handling - Question 20

Probability of even number =No. of favourable outcomes/ total outcomes= 5/10=1/2

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