12. Here the first five whole numbers are 0, 1, 2, 3, 4, So the square of whole numbers = 02, 12, 22, 32, 42 = 0, 1, 4, 9, 16. Academic Partner. 1800-212-7858 / 9372462318. Maths MCQs for Class 7 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Represent the following data in the form of a frequency distribution table : Question 7. The data can be represented in the form of a frequency distribution table as: 3. A die was thrown 20 times and following scores were recorded. 6. The marks obtained by 40 students of a class are given below : (i) Construct a frequency distribution table. Class 7 NCERT (CBSE and ICSE) Data Handling We haven't recorded any learning activity for this skill yet. Get shields, trophies, certificates and scores while you learn. If the mean of 8, 10, 7, x + 2 and 6 is 9, find the value of x. If different values of variable x are 19.8, 15.4, 13.7, 11.71, 11.8, 12.6, 12.8, 18.6, 20.5 and 21.1, find the mean. Hence, the mean pocket expenses per day are ₹85.75. Find the mean of first six natural numbers. 5. ML Aggarwal Class 7 Solutions for ICSE Maths Chapter 17 Data Handling Ex 17.3 Question 1. Question 1. Find the correct mean. +15.4 +13.7 +11.71 +11.8 +12.6 + 12.8 +18.6 + 20.5 +21.1. The given values are 19.8, 15.4, 13.7, 11.71, 11.8, 12.6, 12.8, 18.6, 20.5 and 21.1, So Mean = (19.8 + 15.4 + 13.7 + 11.71 + 11.8 + 12.6 + 12.8 + 18.6 + 20.5 + 21.1)/ 10, 7. Solution: Question 27. It is mainly of two types i.e., primary and secondary data. The solutions are available in both chapter wise and exercise wise PDF format, based on the needs of students.. 1. This will clear students doubts about any question and improve application skills while preparing for board exams. Find the mean of x + 3, x + 5, x + 7, x + 9 and x + 11. Following data shows the weekly wages (in ₹) of 10 workers in a factory. Extra Questions for Class 7 Maths Chapter 3 Data Handling. (iii) How many numbers are 3.8 or above? 9. Solution: The mean of 5 number = 20 Then, mean of other 5 number = 30. If the mean of 6, 4, 7, p and 10 is 8, find the value of p. It is given that the mean of 6, 4, 7, p and 10 is 8. ICSE Class 7 Most Important … ICSE Class 7 Sample Papers and Solutions. Selina Publishers Concise Mathematics for Class 7 ICSE Solutions all questions are solved and explained by expert mathematic teachers as per ICSE board guidelines. (iii) How many workers are getting the maximum wages? (ii) What is the range of wages (in ₹)? Here on AglaSem Schools, you can access to NCERT Book Solutions in free pdf for Maths for Class 7 so that you can refer them as and when required. Consider the following numbers:68, 76, 63, 75, 93, 83, 70, 115, 82, 105, 90, 103, 92, 52, 99, 73, 75, 63, 77 and 71. Solution: The factor of 10 are 2 and 5, Question 5. (iii) How many students obtained marks below 40? We know that the first six multiples of 3 are 3, 6, 9, 12, 15, 18. 11. Here we have covered Important Questions on Coordinate Geometry for Class 7 Maths subject.. Maths Important Questions Class 7 are given below.. Students can download the PDF of ICSE Class 5 Maths Revision Notes for free and … The rainfall (in mm) in a city on 7 days of a certain week is recorded as follows Find the total and average (mean) rainfall for the week. ICSE Class 7 Revise. The mean of 5 numbers is 27. (ii) What is the range of wages (in ₹)? Solution: Descending order : 4.1, 4.0, 3.9, 3.9, 3.8, 3.8, 3.7, 3.7, 3.6, 3.5, 3.5, 3.4, 3.3, 3.2, 3.1 (i) Range = 4.1 – 3.1 = 1 (ii) Number less than 3.5 = 4 i.e., 3.4, 3.3, 3.2, 3.1 (iii) Number are 3-8 or above = 6 i.e., 3.8, 3.8, 3.9, 3.9, 4.0, 4.1, Question 1. Similarly, Concise Selina Solutions for Mathematics ICSE Class 6 Chapter 33 Data Handling offers students the technique of handling the given set of data and solving data set related problems. ICSE Class 7 Videos. Find the included number. Cambridge Checkpoint 6; Cambridge Checkpoint 7; Cambridge Checkpoint 8; Cambridge IGCSE; More... Blog; Features & Benefits; About Us; Testimonials; Mathematics / Data Handling. Data Handling Class-7 ML Aggarwal ICSE Maths Solutions By PANDEY TUTORIAL On Jul 22, 2020 Data Handling Class-7 ML Aggarwal ICSE Mathematics Solutions Chapter-17. Solution: Arranging in ascending order : 133, 135, 137, 138, 140, 142, 148, 150 Here, number of girls = 8 which is even. Solution: (i) The frequency distribution table will be shown as below : (ii)Students have marks equal to or more than 70 = 5 + 4 + 3 = 12 (iii) Students obtained marks below 40 = 2 + 3 + 3 = 8 students, Question 6. Solution: 19. (iii) How many numbers are 3.8 or above? Find the mean of first four numbers. 15. Chapter 21 deals with tabulation of data, arithmetic or average mean, properties of mean, median, mode and bar graph. Arrange the following data in descending order: Begin mastering this skill by doing some online actiities below that feel like play. ICSE. Proper planning for data handling can also result in efficient and economical storage, retrieval, and disposal of data. Find the resulting mean, if each observation is, The collection of information regarding objects is called data. Data Handling Class 7 Extra Questions Maths Chapter 3. The information collected in all such cases is called data 4. Selina Class 7 Maths ICSE SolutionsPhysicsChemistryBiologyGeographyHistory & Civics, Question 1. In this chapter, you will also learn about the assemblage of information in numerical form which is referred to as data. Find the mean height of these girls and their median height. Class 7th is considered to be equally important class as most of the basic concepts are taught in this class, which are repeated … The data collected in its original form is called raw data. (i) The frequency distribution tables is as given below: (ii) Students having marks equal to or more than 70 = 5 + 4 + 3 = 12, (iii) Students obtained marks below 40 = 2 + 3 + 3 = 8 students. Solution: The frequency table for the scores will be as shown below : Question 4. Login/Register. Data handling ppt for class 7th 1. 6. If different values of variable x are 19.8,15.4,13.7,11.71,11.8, 12.6,12.8,18.6,20.5 and 2.1, find the … For Study plan details. Solution: The pocket expenses (per day) during a certain week are : ₹85.40, ₹88.00, ₹86.50, ₹84.75, ₹82.60 and ₹87.25, Question 9. The mean of marks scored by 100 students was found to be 40, later on it was discovered that a score of 53 was misread as 83. Here the first six multiples of 5 are 5, 10, 15, 20, 25 and 30, So Mean = (5 + 10 + 15 + 20 + 25 + 30)/ 6, Your email address will not be published. You can download the Selina Concise Mathematics ICSE Solutions for Class 7 with Free PDF download option. We provide step by step Solutions of Exercise / lesson-17 Data Handling ICSE Class-7th ML Aggarwal Maths. (ii) Find how many students have marks equal to or more than 70? Question 26. Printable worksheets and online practice tests on data-handling for Class 4. Solution: The rainfall in a city on 7 days are 0.5, 2.7, 2.6, 0.5, 2, 5.8, 1.5, Question 17. Find the mean and the mode for the following data : Solution: We prepare the table given below : Question 23. ICSE. The collection of information regarding objects is called data. 8. ML Aggarwal Class 7 Solutions Chapter 17 Data Handling Ex 17.3 for ICSE Understanding Mathematics acts as the best resource during your learning and helps you score well in your exams. APlusTopper.com provides step by step solutions for Selina Concise ICSE Solutions for Class 7 Mathematics. Data Handling 8th Maths ICSE Chapter 24 Marketing along with videos,solved papers and worksheets.These are helpful for students in doing homework or preparing for the exams Here you can get Class 7 Important Questions Maths based on NCERT Text book for Class VII.Data Handling are very helpful to score high marks in board exams. If the mean of 6, 4, 7, p and 10 is 8, find the value of p. Solution: The mean of 6, 4, 7, p and 10 is 8, Question 15. 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Prepare a frequency table for the scores. Explain the Meaning of Data Handling for Class 7 Maths Chapter 21. The marks obtained by 40 students of a class are given below : 80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40,20, 80, 90, 50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60 and 60 (i) Construct a frequency distribution table. Find the mean of first five prime numbers. SAT Subject Test: Math Level 1; IMO; Navodaya Vidyalaya; SEAMO; NSTSE-MATHS; Olympiad ; NTSE-Maths; Challenge; Q&A. (i) Determine the range. (ii) What is the range of these numbers? Find the mean of first ten odd natural numbers. 13. India; School Math. Solution: The frequency distribution for these data will be as shown below : Question 3. Question 2. Find the mode of: (i) 5, 6, 9, 13, 6, 5, 6, 7, 6, 6, 3 (ii) 7, 7, 8, 10, 10, 11, 10, 13, 14 Solution: (i) Arranging the Numbers in ascending order : 3, 5, 5, 6, 6, 6, 6, 6, 7, 9, 13 Mostly repeated term = 6 ∴ Mode = 6 (ii) Arranging the Numbers in ascending order = 7, 7, 8, 10, 10, 10, 11, 13, 14 Mostly repeated term =10 ∴ Mode = 10, Solution: (i) Since, the frequency of number 18 is maximum ∴Mode = 18 (ii) Since, the frequency of number 41 is maximum ∴ Mode = 41, Question 25. ML Aggarwal Class 7 Solutions for ICSE Maths Chapter 17 Data Handling Objective Type Questions Become our. Solution: Question 22. Learn and practice for CBSE class 7 maths using skill-based exercises and videos. Find the mean of first four numbers. Cambridge Checkpoint 6; Cambridge Checkpoint 7; Cambridge Checkpoint 8; Cambridge IGCSE; More... Blog; Features & Benefits; About Us; Testimonials; Mathematics / Data Handling. Data […] Solution: The mean of six numbers are x – 5, x – 1,x,x + 2,x + 4 and x + 12 is 15, Question 13. The pocket expenses (per day) of Anuj, during a certain week, from monday to Saturday were ₹85.40, ₹88.00, ₹86.50, ₹84.75, ₹82.60 and ₹87.25. These ICSE Class 5 Maths Data Handling Revision Notes are designed keeping in my mind the exam pattern and syllabus of CISCE 2020-2021. It is a method of representing data visually. Mathematics, Class 7 ICSE. In this video I have created an Introduction for "Data Handling" Chapter, hope you will like it, Please comment on below box for your suggestions. ICSE Class 7 Tests . Some commonly used diagrams to represent numerical data are: •Pictographs •Bar graph •Double bar graph •Pie-diagrams or Pie-charts 3. Organisation of Data Organisation of Data. Selina Publishers Concise Mathematics Class 7 ICSE Solutions Chapter 21 Data Handling, ICSE SolutionsSelina ICSE SolutionsML Aggarwal Solutions. (i) We can write the above numbers in ascending order as, 52, 63, 63, 68, 70, 71, 73, 75, 75, 76, 77, 82, 83, 90, 92, 93, 99, 103, 105, 115, Range of these numbers = largest number – smallest number. (vi) decreased by 20%, (i) Increased by 3Here the observed mean = 32, (ii) Decreased by 7Here the observed mean = 32, (iii) Multiplied by 2Here the observed mean = 32, (iv) Divided by 0.5Here the observed mean = 32, (v) Increased by 60%Here the observed mean = 32. Introduction to Probability Introduction to Probability. The mean of a certain number of observations is 32. Learn and practice for CBSE class 7 maths using skill-based exercises and videos. It is mainly of two types i.e., primary and secondary data. (ii) How many numbers are less than 3.5? The content is mapped as per NCERT textbook and is completely free. … (i) The frequency distribution table for weekly wages of 10 workers can be given as: (ii) Range of wages = 4750 – 3500 = ₹ 1250. In Middle School Mathematics Class 7 Selina Solutions By RK Bansal, all questions are solved and explained by expert mathematic teachers as per ICSE board guidelines. Solution: Mean of x + 3, x + 5, x + 7, x + 9 and x + 11, Question 6. Bar Graphs Bar Graphs. (i) Prepare a frequency distribution table. (iv) divided by 0.5 Here the first six natural numbers are 1, 2, 3, 4, 5, 6. Consider the following numbers : 68, 76, 63, 75, 93, 83, 70, 115, 82, 105, 90, 103, 92, 52, 99, 73, 75, 63, 77 and 71. 10. Find the mean of squares of first five whole numbers. 10:00 AM to 7:00 PM IST all days. If … Free PDF Download of CBSE Maths Multiple Choice Questions for Class 7 with Answers Chapter 3 Data Handling. The NCERT Solutions to the questions after every unit of NCERT textbooks aimed at helping students solving difficult questions.. For a better understanding of this chapter, you should … Question 21. (i) Determine the range. Find the mean of first six multiples of 5. (ii) What the range of these numbers? In the case of data handled electronically, data integrity is a primary concern to … The heights (in cm) of 8 girls of a class are 140,142,135,133,137,150,148 and 138 respectively. Solution: Mean of x + 3, x + 5, x + 7, x + 9 and x + … By studying these Selina ICSE Solutions for Class 7 Maths you can easily get good marks in ICSE Class 7 Board Examinations. (iii) multiplied by 2 Edugain. Find the range of the following data: 21, 16, 30, 15, 16, 18, 10, 24, 26, 20 Solution: Greatest number 30 Smallest number = 10 Range = 30 – 10 = 20. WEL COME TO MY MATHEMATICS FA-4 2. It is given that the mean of six numbers x-5, x- 1, x, x + 2, x + 4 and x + 12 is 15, So Mean = [(x – 5) + (x – 1) + x + (x + 2) + (x + 4) + (x + 12)]/ 6, 15 = (x – 5 + x – 1 + x + x + 2 + x + 4 + x + 12)/ 6, So the six numbers are (13 – 5), (13 – 1), 13, (13 + 2), (13 + 4), (13 + 12) = 8, 12, 13, 15, 17, 25, Here the mean of first four numbers = (8 + 12 + 13 + 15)/ 4 = 48/4 = 12. ICSE Class 7 Maths Data Handling. Find the median of the following data: (i) 3, 1, 5, 6, 3, 4, 5 (ii) 3, 1, 5, Selina Solutions Concise Maths Class 7 Chapter 21 Data Handling provides students with the method of handling the given set of data. A die was thrown 20 times and following scores were recorded. Find the mean of squares of first five whole numbers. Find the mode of the following data: 24, 26, … Mean of 5 numbers is 20 and mean of other 5 numbers is 30. Find the mean of x + 3, x + 5, x + 7, x + 9 and x + 11. Find the mean of first six multiples of 3. The following table shows the market positions of some brands of soap. 16, 17, 21, 20, 16, 20, 16, 18, 17, 21, 17, 18, 19, 17, 15, 15, 19, 19, 18, 17, 17, 15, 15, 16, 17, 17, 19, 18, 17, 16, 15, 20, 16, 17, 19, 18, 19, 16, 21 and 17. Solution: Mean of 40 observations = 100 Total sum of 40 observations = 100 × 40 = 4000 Incorrect total of 40 observation is = 4000 Correct total of 40 observations = 4000 – 83 + 53 = 3970 ∴ Correct mean = $$\frac { 3970 }{ 100 }$$ = 39.70, Question 18. Studymaterial for the Data Handling, ICSE Class 7 MATH, Mathematics. Required fields are marked *. Data Handling Class 7 Extra Questions Very Short Answer Type. Solution: Mean of 5 observations = 27 Total sum of 5 observations = 27 × 5 = 135 On excluding an observation, the mean of remaining 6 observations = 25 ⇒ Total of remaining 4 observations = 25 x 4 = 100 ⇒ Included observation = Total mean of 5 observations – Total mean of 4 observations = 135- 100 = 35, Question 19. 2, 1, 5, 2, 4, 3, 6, 1, 4, 2, 5, 1, 6, 2, 6, 3, 5, 4, 1 and 3. Here the first five prime numbers are 2, 3, 5, 7, 11. Solution: First five whole numbers are 0, 1, 2, 3, 4 Then square the whole prime numbers, Question 14. Data Handling (Class - VII - ICSE) is a practice test for ICSE students. The data collected in its original form is called raw data. Find the median of: (i) 5,7, 9, 11, 15, 17,2, 23 and 19 (ii) 9, 3, 20, 13, 0, 7 and 10 (iii) 18, 19, 20, 23, 22, 20, 17, 19, 25 and 21 (iv) 3.6, 9.4, 3.8, 5.6, 6.5, 8.9, 2.7, 10.8, 15.6, 1.9 and 7.6. Find the mean of first five prime numbers. Click on your test category For full functionality of this site it is necessary to enable JavaScript. The mean of six numbers :x-5,x- 1, x, x + 2, x + 4 and x + 12 is 15. The Council for The Indian School Certificate Examinations (CISCE) is the board of examination that conducts examination for the Indian Certificate of Secondary Examination (ICSE) for classes up to 10th and Indian School Certificate (ISC) for class 12th. Data Handling Exercise 21A – Selina Concise Mathematics Class 7 ICSE Solutions. (i) Arrange these numbers in ascending order. 2. Answer: Data Handling is the process of collecting, recording, or representing information in different useful forms. Home; Learning … Solution: The mean 8, 10, 7, x + 2 and 6 is 9, Question 10. If different values of variable x are 19.8,15.4,13.7,11.71,11.8, 12.6,12.8,18.6,20.5 and 2.1, find the … The pocket expenses (per day) of Anuj, during a certain week, from monday to saturday were ₹85.40, ₹88.00, ₹86.50, ₹84.75, ₹82.60 and ₹87.25. The birth rate per thousand of different countries over a particular period of time is shown below. Tags: ICSE, ICSE Data Handling Class 7, ICSE Data Handling Class 7 Exercise 21A Homework, ICSE Data Handling Class 7 Exercise 21A Solution, ICSE Data Handling Class 7 Solution, ICSE Data Handling Ex 21A, RK Bansal Solution Class 7 Math, Selina Concise Class 7 Chapter 21A Solution, Selina Concise Class 7 solution, Selina Concise Data Handling Exercise 21A Hometask, Selina Solution … Consider the following numbers : 68, 76, 63, 75, 93, 83, 70, 115, 82, 105, 90, 103, 92, 52, 99, 73, 75, 63, 77 and 71. A bar graph is a representation of numbers using bars of uniform width and the lengths of the bars depend upon the frequency and the scale you have chosen. Contact us on below numbers. If you're seeing this message, it means we're having trouble loading external resources on our website. Solution: Mean of 5 observations = 27 Total sum of 5 observations = 27 x 5 = 135 On including an observation the mean of 6 observation = 25 x 6 = 150 ⇒ Included observations = Total Mean of 6 observations – Total mean of 5 observations = 150- 135 = 15, Question 20. Find the mean of first six multiples of 5. NCERT Solutions for Class 7 Maths Chapter 3 Data Handling are formulated by our professional tutors to help you with your exam preparation to attain good marks in Maths. In the case of bar graph or bar diagram, Bars of uniform width are drawn horizontally or vertically with equal spacing between them and then the length … 3. Class 1; Class 2; Class 3; Class 4; Class 5; Class 6; Class 7; Class 8; Class 9; Class 10; Kindergarten; LKG; UKG; Common Core. Find the mean of first six natural numbers. Solution: Six multiples of 5 are : 5, 10, 15, 20, 25 and 30, Question 16. The NCERT book is one of the top materials when it comes to providing a question bank to practice. The ICSE Class 5 Data Handling Revision Notes will enable students to have an expert studying pattern with which they can enjoy learning the subject and perform better in the exams. Solution: First six natural numbers are : 1, 2, 3, 4, 5, 6, Question 3. 3.3, 3.2, 3.1, 3.7, 3.6, 4.0, 3.5, 3.9, 3.8, 4.1, 3.5, 3.8, 3.7, 3.9 and 3.4. Need assistance? Following data shows the weekly wages (in ₹) of 10 workers in a factory. Pictographs represent data through appropriate pictures. Math Knowledge Base (Q&A) Ask a new question; All … Solution: (i) When the above data are written in ascending order. Our Solutions contain all type Questions with Exe-24 A, Exe-24 B, Exe-24 C, Exe-24 D, MCQs Exe-24 E with Mental Maths to develop skill and confidence. NCERT Solutions Class 7 Maths Chapter 3 Data Handling. Students can solve NCERT Class 7 Maths Data Handling MCQs Pdf with Answers to know their preparation level. ML Aggarwal Class 7 Solutions for ICSE Maths Chapter 17 Data Handling Ex 17.3 Question 1. Our main objective is to help students understand and crack these problems. Students can access Selina Solutions Concise Maths Class 7 Chapter 21 Data Handling PDF, from the links available here. Mean, Median and Mode of Ungrouped Data Mean, Median and Mode of Ungrouped Data. If one new number is included, the new mean is 25. The content is mapped as per NCERT textbook and is completely free. Find the resulting mean, if each observation is, (i) increased by 3 (ii) decreased by 7 (iii) multiplied by 2 (iv) divided by 0.5 (v) increased by 60% (vi) decreased by 20% Solution: Question 8. Solution: The first five prime numbers are 2, 3, 5, 7, 11, Question 12. 14. Multiple Choice Questions We provide step by step Solutions of Exercise / lesson-24 Data Handling for ICSE Class-7 RS Aggarwal Mathematics. 5. It is given that the pocket expenses (per day) during a certain week are, ₹85.40, ₹88.00, ₹86.50, ₹84.75, ₹82.60 and ₹87.25, So the mean pocket expenses per day = (85.40 + 88.00 + 86.50 + 84.75 + 82.60 + 87.25)/ 6. Find the mean of first ten odd natural numbers. Find the mean of x + 3, x + 5, x + 7, x + 9 and x + 11. Contact. Represent the following data in the form of a frequency distribution table : 16, 17, 21, 20, 16, 20, 16, 18, 17, 21, 17, 18, 19, 17, 15, 15, 19, 19, 18, 17, 17, 15, 15, 16, 17, 17, 19, 18, 17, 16, 15, 20, 16, 17, 19, 18, 19, 16, 21 and 17. For example, in the form of graphs or pie charts. Find the mean pocket expenses per day. Arrange the following data in descending order: 3.3, 3.2, 3.1, 3.7, 3.6, 4.0, 3.5, 3.9, 3.8, 4.1, 3.5, 3.8, 3.7, 3.9 and 3.4. Solution: Question 2. or own an. (iii) One worker is getting the minimum wages. 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Class 6 Chapter 33 - Data Handling (Including Pictograph And Bar Graph) Selina Solutions PDF . Find the excluded number. Questions on data handling for class 7 Maths prepared by expert of entrancei get inside exercise-1 of data handling (iii) How many students obtained marks below 40? … Question 2. Find the mean, the median and the mode of: (i) 12, 24, 24, 12, 30 and 12 (ii) 21, 24, 21, 6, 15, 18, 21, 45, 9, 6, 27 and 15. Find the mean of all the 10 numbers taken together. Mean, Median and Mode of Ungrouped Data - Get Get topics notes, Online test, Video lectures & Doubts and Solutions for ICSE Class 7 Mathematics on TopperLearning. Solution: First ten odd natural numbers are 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, Question 4. Find the mean pocket expenses per day. (ii) What the range of these numbers? Here the first ten odd natural numbers are 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, So Mean = (1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19)/ 10. Class 1; Class 2; Class 3; Class 4; Class 5; Class 6; Class 7; Class 8; Class 9; Class 10; Competitive Exams. 3500, 4250, 4000, 4250, 4000, 3750, 4750, 4000, 4250 and 4000 (i) Prepare a frequency distribution table. The given terms are x + 3, x + 5, x + 7, x + 9 and x + 11, So Mean = [(x + 3) + (x + 5) + (x + 7) + (x + 9) + (x + 11)]/ 5. The mean of a certain number of observations is 32. (i) Arrange these numbers in ascending order. Education Franchise × Contact Us. 3500, 4250, 4000, 4250, 4000, 3750, 4750, 4000, 4250 and 4000 Solution: (i) The frequency table for the wages of 10 workers will be as shown below : (ii) Range of wages (₹) = ₹4750 – ₹3500 = ₹1250 (iii) One, Question 5. The mean of six numbers: x-5, x- 1, x, x + 2, x + 4 and x + 12 is 15. Home; Learning … The frequency table for the scores can be given as: 4. 80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40,20, 80, 90, 50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60 and 60 Selina solutions for Concise Mathematics Class 7 ICSE chapter 21 (Data Handling) include all questions with solution and detail explanation. Find the median of the following data: In pictographs, the same type of symbol or picture is used … Solution: The six multiples of 3 are 3, 6, 9, 12, 15, 18, Question 11. (ii) How many numbers are less than 3.5? Grade 1; Grade 2; Grade 3; Grade 4; Grade 5; Grade 6; Grade 7; Grade 8 ; IGCSE. Solution: Mean of 53, 6i, 60, 67 and 64, Question 2. We can write the given data in descending order, 4.1, 4.0, 3.9, 3.9, 3.8, 3.7, 3.7, 3.6, 3.5, 3.5, 3.4, 3.3, 3.2, 3.1. Your email address will not be published. 2, 1, 5, 2, 4, 3, 6, 1, 4, 2, 5, 1, 6, 2, 6, 3, 5, 4, 1 and 3. 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