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Data Handling
NCERT Solutions
NCERT Solutions
Data Handling
11 Solutions
Exercise:
All Exercises
EXERCISE 4.1
EXERCISE 4.2
Q1
EXERCISE 4.1
A survey was made to find the type of music that a certain group of young people liked in a city. Adjoining pie chart shows the findings of this survey. From this pie chart answer the following:
(i)
If 20 people liked classical music, how many young people were surveyed?
(ii)
Which type of music is liked by the maximum number of people?
(iii)
If a cassette company were to make 1000 CD's, how many of each type would they make?
Q2
EXERCISE 4.1
A group of 360 people were asked to vote for their favourite season from the three seasons rainy, winter and summer.
(i)
Which season got the most votes?
(ii)
Find the central angle of each sector.
(iii)
Draw a pie chart to show this information.
Q3
EXERCISE 4.1
Draw a pie chart showing the following information. The table shows the colours preferred by a group of people.
Colours
Number of people
Blue
18
Green
9
Red
6
Yellow
3
Total
36
Q4
EXERCISE 4.1
The adjoining pie chart gives the marks scored in an examination by a student in Hindi, English, Mathematics, Social Science and Science. If the total marks obtained by the students were 540, answer the following questions.
(i)
In which subject did the student score 105 marks? (Hint: for 540 marks, the central angle =
360
∘
360^\circ
36
0
∘
. So, for 105 marks, what is the central angle?)
(ii)
How many more marks were obtained by the student in Mathematics than in Hindi?
(iii)
Examine whether the sum of the marks obtained in Social Science and Mathematics is more than that in Science and Hindi. (Hint: Just study the central angles).
Q5
EXERCISE 4.1
The number of students in a hostel, speaking different languages is given below. Display the data in a pie chart.
Language
Number of students
Hindi
40
English
12
Marathi
9
Tamil
7
Bengali
4
Total
72
Q1
EXERCISE 4.2
List the outcomes you can see in these experiments.
(a)
Spinning a wheel
(b)
Tossing two coins together
Q2
EXERCISE 4.2
When a die is thrown, list the outcomes of an event of getting
(i)
(a)
a prime number
(b)
not a prime number.
(ii)
(a)
a number greater than 5
(b)
a number not greater than 5.
Q3
EXERCISE 4.2
Find the.
(a)
Probability of the pointer stopping on D in (Question 1-(a))?
(b)
Probability of getting an ace from a well shuffled deck of 52 playing cards?
(c)
Probability of getting a red apple. (See figure below)
Q4
EXERCISE 4.2
Numbers 1 to 10 are written on ten separate slips (one number on one slip), kept in a box and mixed well. One slip is chosen from the box without looking into it. What is the probability of.
(i)
getting a number 6?
(ii)
getting a number less than 6?
(iii)
getting a number greater than 6?
(iv)
getting a 1-digit number?
Q5
EXERCISE 4.2
If you have a spinning wheel with 3 green sectors, 1 blue sector and 1 red sector, what is the probability of getting a green sector? What is the probability of getting a non blue sector?
Q6
EXERCISE 4.2
Find the probabilities of the events given in Question 2.
Data Handling NCERT Solutions - Class 8 Mathematics | Kedovo | Kedovo