The information collected in all such cases is called data 4. 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. Question 1. Chapter 21 deals with tabulation of data, arithmetic or average mean, properties of mean, median, mode and bar graph. 3500, 4250, 4000, 4250, 4000, 3750, 4750, 4000, 4250 and 4000 (i) Prepare a frequency distribution table. Required fields are marked *. This will clear students doubts about any question and improve application skills while preparing for board exams. Login/Register. 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Education Franchise × Contact Us. Class 7 Maths Data Handling: Bar graph: Bar graph. Class 7th is considered to be equally important class as most of the basic concepts are taught in this class, which are repeated … ICSE Class 7 Tests . Printable worksheets and online practice tests on data-handling for Class 4. Learn and practice for CBSE class 7 maths using skill-based exercises and videos. The collection of information regarding objects is called data. By studying these Selina ICSE Solutions for Class 7 Maths you can easily get good marks in ICSE Class 7 Board Examinations. 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. Solution: The frequency table for the scores will be as shown below : Question 4. (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. Academic Partner. Selina Publishers Concise Mathematics for Class 7 ICSE Solutions all questions are solved and explained by expert mathematic teachers as per ICSE board guidelines. Question 21. Find the mean of x + 3, x + 5, x + 7, x + 9 and x + 11. Mathematics, Class 7 ICSE. Questions on data handling for class 7 Maths prepared by expert of entrancei get inside exercise-1 of data handling 3500, 4250, 4000, 4250, 4000, 3750, 4750, 4000, 4250 and 4000 The given numbers are 53, 61, 60, 67 and 64. 1800-212-7858 / 9372462318. 6. 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. 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. 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. Following data shows the weekly wages (in ₹) of 10 workers in a factory. ICSE. 5. If you're seeing this message, it means we're having trouble loading external resources on our website. Find the mean of squares of first five whole numbers. The frequency table for the scores can be given as: 4. 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. Pictographs represent data through appropriate pictures. Find the mean of 53, 61, 60, 67 and 64. 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. Become our. Find the mean pocket expenses per day. Prepare a frequency table for the scores. Prepare a frequency table for the scores. Solution: The first five prime numbers are 2, 3, 5, 7, 11, Question 12. Here the first six natural numbers are 1, 2, 3, 4, 5, 6. ML Aggarwal Class 7 Solutions for ICSE Maths Chapter 17 Data Handling Ex 17.3 Question 1. 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 collection of information regarding objects is called data. (i) Determine the range. These ICSE Class 5 Maths Data Handling Revision Notes are designed keeping in my mind the exam pattern and syllabus of CISCE 2020-2021. (i) Arrange these numbers in ascending order. Solution: First six natural numbers are : 1, 2, 3, 4, 5, 6, Question 3. 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. 2. Answer: Data Handling is the process of collecting, recording, or representing information in different useful forms. 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: 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. (ii) How many numbers are less than 3.5? Contact. 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. 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