Statistics is one of the most used part of mathematics in real world. Real world is filled with data which the companies need to understanding their user behavior like demography, purchasing behavior, interests etc and governments used various data like income, family members, literacy rate, etc to understand the progress of social welfare programs. The usage of mean or average, mode , median, frequency and using various graph and charts to analyze the given information graphically is used by all types of people. This chapter on Data Handling understand the concepts of gathering data, and getting required information from it. It show how to use bar graph and histogram to analyze the trends and other useful information in the processed data.
Grade 8 Data Handling chapter teaches the concepts of gathering data, and getting required information from it. It show how to use bar graph and histogram to analyze the trends and other useful information in the processed data. This chapter has been best covered in Class 8 Maths NCERT book, which give real life examples of reading and analyzing charts, tables and other data source, and get the required analysis done thoroughly.
NCERT books are recommended course text books for students following Indian curriculum. They have been followed by CBSE and all other major school boards in India and abroad. Almost all of the public and private schools recommend this books to their students.
In this article, we have discussed about the Class 8 maths NCERT exercises for data handling chapter. We have provided detailed video solutions of NCERT problems for Class 8. Students can look into solved NCERT exercises for class 8 mathematics.
Though data handling chapter looks easy, but many students make mistake in reading data, and get the actual information from that. These solved NCERT problems for class 8 will help in clearing the concepts of data handling, and also make student understand in how to avoid common mistakes in data handling chapter.
Class 8 math ncert solution data handling chapter
Exercise 5.1 solutions
Q1 – For which of these would you use a histogram to show the data? (a) The number of letters for different areas in a postman’s bag. (b) The height of competitors in an athletics meet. (c) The number of cassettes produced by 5 companies.(d) The number of passengers boarding trains from 7:00 a.m. to 7:00 p.m. at a station. Give reasons for each. View Answer
Q2 – The shoppers who come to a departmental store are marked as: man (M), woman (W), boy (B) or girl (G). The following list gives the shoppers who came during the first hour in the morning: W W W G B W W M G G M M W W W W G B M W B G G M W W M M W W W M W B W G M W W W W G W M M W W M W G W M G W M M B G G W Make a frequency distribution table using tally marks. Draw a bar graph to illustrate it. View Answer
Q3 – 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. View Answer
Q4 – Draw a histogram for the frequency table made for the data in Question 3, and answer the following questions.(i) Which group has the maximum number of workers? (ii) How many workers earn Rs 850 and more? (iii) How many workers earn less than Rs 850? View Answer
Q5 – The number of hours for which students of a particular class watched television during holidays is shown through the given graph. Answer the following. (i) For how many hours did the maximum number of students watch TV? (ii) How many students watched TV for less than 4 hours?(iii) How many students spent more than 5 hours in watching TV? View Answer
Exercise 5.2
Q1 – 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? View Answer
Q2 – A group of 360 people were asked to vote for their favorite 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. View Answer
Q3 – Draw a pie chart showing the following information. The table shows the colours preferred by a group of people View Answer
Q4 – 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? (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. View Answer
Q5 – The number of students in a hostel, speaking different languages is given below. Display the data in a pie chart. View Answer
Exercise 5.3
Q1 – List the outcomes you can see in these experiments. (a) Spinning a wheel (b) Tossing two coins together View Answer
Q2 – 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. View Answer
Q3 – 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 View Answer
Q4 – 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? View Answer
Q5 – 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? View Answer
Q6 – Find the probabilities of the events given in Question 2 View Answer
End Note
In the article, we have shared solutions for ncert exercises for class 8 maths for data handling chapter. Students can click to respective chapters and refer to the right solution. We advise students to refer to them as clearing their concepts, and matching their solutions. Student should not use them to copy solutions for their homework and instead should try to solve homework on own, as it will impact their learning process.
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