Unit Test: Data Handling | Mathematics (Maths) Class 8 PDF Download

Time: 1 hour 
M.M.: 30 
Attempt all questions. 
Question numbers 1 to 5 carry 1 mark each. 
Question numbers 6 to 8 carry 2 marks each. 
Question numbers 9 to 11 carry 3 marks each. 
Question numbers 12 & 13 carry 5 marks each.

Q1: In the class interval 5-10, find the (1 Mark)
(i) lower limit
(ii) upper limit
(iii) class mark
(iv) class size

Q2: A group of 20 students recorded their heights (in cm). The data received were as given below. What is the range?
150, 120, 112, 160, 155, 151, 158, 142, 148, 149, 161, 165, 140, 157, 156, 146, 148, 153, 138, 135 (1 Mark)

Q3: The monthly salary of an average person is Rs. 15,000. The central angle of the given sector representing his expenses on food and house rent on a pie chart is 60°. The amount he spends on his food and house rent is (1 Mark)
(i) Rs. 5000
(ii) Rs. 2500 
(iii) Rs. 6000 
(iv) Rs. 9000

Q4: The pie chart given below shows the distribution of constituentsin the human body. The central angle of the given sector showing thedistribution of protein and other constituents is (1 Mark)

(i) 108° 
(ii) 54° 
(iii) 30° 
(iv) 216°

Q 5: What is the central angle of the given sector (in the above pie chart) representing skin and bones together? (1 Mark)

(i) 36° (ii) 60° (iii) 90° (iv) 96°

Q6: 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? (2 Marks)

Q7: When a die is thrown, list the outcomes of an event of getting: (2 Marks)
(i) (a) a prime number (b) not a prime number
(ii) (a) a number greater than 5 (b) a number not greater than 5.

Q8: 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: (2 Marks)
(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?

Q9: The weekly wages (in Rs.) of 30 workers in a factory are: 830, 835, 890, 810, 835, 836, 869, 845, 898, 890, 820, 860, 832, 833, 855, 845, 804, 808, 812, 840, 885, 835, 835, 836, 878, 840, 868, 890, 806, 840.Using tally marks, make a frequency table with intervals as 800 – 810, 810 – 820 and so on. (3 Marks)

Q10: The number of hours for which students of a particular class watched television during holidays is shown through the given graph. Answer the following: (3 Marks)
(i) For how many hours did the maximum number of students watch T.V.?
(ii) How many students watched TV for less than 4 hours?
(iii) How many students spent more than 5 hours watching TV?

Q11: A survey was made to find the type of music that a certain group of young people liked in a city. The adjoining pie chart shows the findings of this survey. From this pie chart, answer the following: (3 Marks)
(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?

Q12: 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.(5 Marks)
(i) In which subject did the student score 105 marks?
(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.

Q13: The number of students in a hostel, speaking different languages is given below. Display the data in a pie chart. (5 Marks)

You can find the solutions of this Unit Test here: ​Unit Test (Solution): Data Handling​​​