CBSE Class 8 Mathematics Data Handling Assignment Set B

1. A bag has 4 red balls and 2 yellow balls. (The balls are identical in all respect other than colour). A ball is drawn from the bag without looking into the bag. The probability of getting a red ball is ____.
(A) 1/2
(B) 2/3
(C) 1/4
(D) 1/5
Answer : B

DIRECTION (2 - 4) : The histogram representing the marks obtained by 60 students in a Mathematics examination

2. What is the total number of students who obtained more than or equal to 80 marks in the examination?
(A) 13
(B) 3
(C) 8
(D) 11
Answer : D

3. If the minimum pass marks was 40, how many students failed ?
(A) 1
(B) 13
(C) 2
(D) 7
Answer : C

4. How many students were awarded merit, if the minimum marks required for it are 80?
(A) 10
(B) 11
(C) 12
(D) 8
Answer : B

5. A die is thrown. The probability of getting a multiple of 3 is ____.
(A) 1/2
(B) 1/3
(C) 1/4
(D) 1/5
Answer : B

6. From the given table, the number of students who got more than or equal to 50 marks, is ____.

(A) 15
(B) 21
(C) 25
(D) 29
Answer : C

7. The given pie chart gives the marks scored in an examination by a student in English, Hindi, Science & Technology, Social Science and Mathematics. If the total marks obtained by the student were 540, then the subject in which the student scored 105 marks, is______.

(A) English
(B) Mathematics
(C) Social Science
(D) Hindi
Answer : D

8. The probability of occurrence of an event is ____.

Answer : B

9. In a survey of 200 ladies, it was found that 82 like coffee while 118 dislike it. From these ladies, one is chosen at random.
The probability that the chosen lady dislike coffee is ____.
(A) 59/100
(B) 41/100
(C) 100/59
(D) 100/41
Answer : A

10. The number of times a particular entry occurs in a set of data is known as its
(A) Range
(B) Class-size
(C) Frequency
(D) Class-interval
Answer : C

11. The mid-value of a class-interval is called its
(A) Class-limit
(B) Class-mark
(C) Class-width
(D) Range
Answer : B

DIRECTION (12 - 15) : Study the graph carefully and answer the questions given below it.

12. In which year did the wheat import register highest increase over its preceding year ?
(A) 1973
(B) 1974
(C) 1975
(D) 1978
Answer : C

13. The wheat import in 1976 was approximately how many times to that of the year 1972 ?
(A) 0.31
(B) 1.68
(C) 2.41
(D) 3.22
Answer : D

14. The increase in wheat import in 1978 was what percent of the wheat import in 1977 ?
(A) 25 %
(B) 5 %
(C) 125 %
(D) 80 %
Answer : A

15. The wheat import in 1974 is approximately what percent of the average wheat import for the given years ?
(A) 125 %
(B) 115 %
(C) 190 %
(D) 85 %
Answer : B

16 In a school only 3 out of 5 students can participate in a competition. What is the probability of the students who do not make it to the competition?
(A) 0.65
(B) 0.4
(C) 0.45
(D) 0.6
Answer : B

17. Rohan and Shalu are playing with 5 cards as shown in the figure. What is the probability of Rohan picking a card without seeing, that has the number 2 on it?

(A) 2/5
(B) 1/5
(C) 3/5
(D) 4/5
Answer : A

18. Monthly salary of a person is ` 15000. The
central angle of the sector representing
his expenses on food and house rent on
a pie chart is 60°. The amount he spends
on food and house rent is
(A) ₹ 5000
(B) ₹ 2500
(C) ₹ 6000
(D) ₹ 9000
Answer : B

19 A glass jar contains 6 red, 5 green, 4 blue and 5 yellow marbles of same size. Hari takes out a marble from the jar at random. What is the probability that the chosen marble is of red colour?
(A) 7/10
(B) 3/10
(C) 4/5
(D) 2/5
Answer : B

20. Ram put some buttons on the table. There were 4 blue, 7 red, 3 black and 6 white buttons in all. All of a sudden, a cat jumped on the table and knocked out one button on the floor. What is the probability that the button on the floor is blue?
(A) 7/20
(B) 3/5
(C) 1/5
(D) 1/4
Answer : C

DIRECTION (21-22) : The given pie chart shows the spendings of a family on various heads during a month. Study the graph and answer the questions

21. If the total income of the family is ₹ 25000, then the amount spent on rent and food together is _____.
(A) ₹ 17250
(B) ₹ 14750
(C) ₹ 11250
(D) ₹ 8500
Answer : B

22. What is the ratio of the expenses on education to the expenses on food?
(A) 1 : 3
(B) 3 : 1
(C) 3 : 5
(D) 5 : 3
Answer : A

23. The given bar graph shows the number of students in a hostel speaking different languages. Study the bar graph and answer the following questions.

(i) How many students are there in the hostel?
(ii) What is the ratio of the number of students speaking Punjabi to those speaking English?
(iii) What is the percentage of the students speaking Marathi over those speaking Hindi?
        (i)         (ii)         (iii)
(A) 152       3 : 4       27.9%
(B) 152       4 : 5       25%
(C) 145       7 : 5       27.2%
(D) 145       7 : 9       30%
Answer : C

24. Look at the given below data.
39, 25, 5, 33, 19, 21, 12, 48, 13, 21, 9, 1, 10, 8, 12, 17, 41,40, 12, 46, 37, 17, 27, 30, 6, 2, 23, 19
The frequency distribution of the data is given here

Which of the above tables is the frequency table of the given data?
(A) Only P
(B) Only Q
(C) Neither P nor Q
(D) Can’t be determined
Answer : C

25. The given pie chart represents the distribution of proteins in parts of a human body. What is the ratio of distribution of proteins in the muscles to that of proteins in the bones?

(A) 3 : 1
(B) 1 : 2
(C) 1 : 3
(D) 2 : 1
Answer : D

Data Handling Questions carrying 1 Mark each :-

Q.1 List the number of outcomes when a coin is tossed.

Q.2 In a bar graph, bars are of equal________ but varying,__________.

Q.3 A pic chart is also called a ____________.

Q.4 In a pie chart, the total sum of all central angles must be ____________.

Questions Carrying 2 Mark each:-

Q.5 The marks obtained in Mathematics by 40 students of a class in an examination are 3, 20, 13, 1, 21, 13, 3, 23, 16, 13, 5, 24, 15, 7, 10, 18, 18, 7, 17, 21, 15, 5, 23, 2, 12, 20, 2, 10, 16, 23, 18, 12, 6, 9, 7, 3, 5, 16, 8 and 8. Present the data in the form of a grouped frequency distribution, using class intervals of equal size, one of the class intervals being 5-10.

Q.6 Read the bar graph and answer the following questions:- (

i) In which subject maximum number of students got distinction?

(ii) In which subject, the number of distinctions is minimum?

(iii) How many distinctions were obtained by students in a school?

(iv) Write subject in order of the performance. Please refer to attached file for detailed assignment

Q.7 Two dice are thrown, find and number of outcomes.

Q.8 There are 2 Red, 3 Blue and 5 Black balls in a bag.Aball is drawn from the bag without looking in to the bag. What is the probability of getting a non-red ball?

Click on link below to download CBSE Class 8 Mathematics Data Handling Assignment Set B