14.3 class 9

NCERT Exemplar Class 9 Maths Solutions for Chapter 14 - Statistics and Probability NCERT Exemplar Solutions Class 9 Maths Chapter 14 – Free PDF Download The NCERT Exemplar Class 9 Maths Chapter 14 Statistics and Probability is provided here for students to prepare well for exams. These exemplar problems and solutions are designed by subject experts in accordance with the • Collection and presentation of data in graphical form • Measures of central tendency • The basic approach to probability and problems based on them Statistics and Probability is one of the most important chapters of Class 9 Mathematics. In this chapter, students will learn how to find the mean, median and mode of a given data. And in the second part of the chapter, they will learn to find the probability of a given situation. To learn these concepts, students are advised to practise Access Answers to NCERT Exemplar Solutions for Class 9 Maths Chapter 14 Statistics and Probability Exercise 14.1 Page No: 131 Write the correct answer in each of the following: 1. The class mark of the class 90-120 is: (A) 90 (B) 105 (C) 115 (D) 120 Solution: (B) 105 Explanation: Class mark = (upper limit + lower limit) / 2 Then, Class mark = 120 + 90 / 2 = 210 / 2 = 105. Hence, option (B) is the correct answer. 2. The range of the data: 25, 18, 20, 22, 16, 6, 17, 15, 12, 30, 32, 10, 19, 8, 11, 20 is (A) 10 (B) 15 (C) 18 (D) 26 Solution: (D) 26 Explanation: According to the question, The minimum and maximum values of given ...

NCERT Solutions for Class 10 Maths Chapter 14 - Statistics Exercise 14.3 * According to the CBSE Syllabus 2023-24, this chapter has been renumbered as Chapter 13. NCERT Solutions for Class 10 Maths Chapter 14 – Statistics Exercise 14.3 have been provided here, prepared by our subject experts. These NCERT Solutions for Class 10 Maths are based on the upcoming academic session of 2023-2024. These are helpful for students to do their revision at the time of the board exam and also to score well. Go through the Download PDF carouselExampleControls112 Previous Next Access Other Exercise Solutions of Class 10 Maths Chapter 14 – Statistics Access Answers to NCERT Class 10 Maths Chapter 14 – Statistics Exercise 14.3 1. The following frequency distribution gives the monthly consumption of an electricity of 68 consumers in a locality. Find the median, mean and mode of the data and compare them. Monthly consumption(in units) No. of customers 65-85 4 85-105 5 105-125 13 125-145 20 145-165 14 165-185 8 185-205 4 Solution: Find the cumulative frequency of the given data as follows: Class Interval Frequency Cumulative frequency 65-85 4 4 85-105 5 9 105-125 13 22 125-145 20 42 145-165 14 56 165-185 8 64 185-205 4 68 N = 68 From the table, it is observed that, N = 68 and hence N/2=34 Hence, the median class is 125-145 with cumulative frequency = 42 Where, l = 125, N = 68, cf = 22, f = 20, h = 20 Median is calculated as follows: \(\begin \) = 125 + [(34 − 22)/20] × 20 = 125 + 12 = ...

NCERT Solutions Class 9 Science Chapter 14 Natural Resources – Here are all the NCERT solutions for Class 9 Science Chapter 14. This solution contains questions, answers, images, step by step explanations of the complete Chapter 14 titled Natural Resources of Science taught in class 9. If you are a student of class 9 who is using NCERT Textbook to study Science, then you must come across Chapter 14 Natural Resources. After you have studied lesson, you must be looking for answers of its questions. Here you can get complete NCERT Solutions for Class 9 Science Chapter 14 Natural Resources in one place. For a better understanding of this chapter, you should also see Chapter 14 Natural Resources Class 9 notes , Science. NCERT Solutions for Class 9 Science Chapter 14 Natural Resources Topics and Sub Topics in Class 9 Science Chapter 14 Natural Resources: • Natural Resources • The Breath of Life: Air • Water: A Wonder Liquid • Mineral Riches in the Soil • Biogeochemical Cycles • Ozone Layer These solutions are part of Page: 193 Question 1. How is our atmosphere different from the atmosphere on Venus and Mars? (SA II – 2013) Answer: Our atmosphere contains a mixture of many gases like nitrogen (78.08%), oxygen (20.95%), carbon dioxide (0.03%) and water vapor (in varying proportion). Whereas the atmosphere on Venus and Mars is mainly comprised of carbon dioxide. This carbon dioxide constitutes up to 95-97% of the atmosphere on Venus and Mars. It is supposed that due to this reason ...

NCERT Solutions for Class 9 Maths Chapter 14 - Statistics Exercise 14.3 * According to the CBSE Syllabus 2023-24, this chapter has been renumbered as Chapter 12. NCERT Solutions is the best guide containing solutions to all the questions provided in the textbook. Thorough practice can help the students score well in the board examinations. NCERT Solutions Class 9 Maths contain stepwise solutions provided by the subject experts. All that is important has been explained in the NCERT Solutions Class 9 Chapter 14 – Statistics Exercise 14.3. These solutions provide good practice while preparing for the CBSE examinations. Download PDF carouselExampleControls111 Previous Next Access other exercise solutions of Class 9 Maths Chapter 14 – Statistics Access Answers of Maths NCERT Class 9 Chapter 14 – Statistics Exercise 14.3 1. A survey conducted by an organisation for the cause of illness and death among women between the ages 15 – 44 (in years) worldwide found the following figures (in %): S.No. Causes Female fatality rate (%) 1. Reproductive health conditions 31.8 2. Neuropsychiatric conditions 25.4 3. Injuries 12.4 4. Cardiovascular conditions 4.3 5. Respiratory conditions 4.1 6. Other causes 22.0 (i) Represent the information given above graphically. (ii) Which condition is the major cause of women’s ill health and death worldwide? (iii) Try to find out, with the help of your teacher, any two factors which play a major role in the cause in (ii) above is the major caus...

NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.2 are part of • • • • Board CBSE Textbook NCERT Class Class 9 Subject Maths Chapter Chapter 14 Chapter Name Statistics Exercise Ex 14.2 Number of Questions Solved 9 Category NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.2 Ex 14.2 Class 9 Maths Question 1. The blood groups of 30 students of class VIII are recorded as follows: A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O Represent this data in the form of a frequency distribution table. Which is the most common and which is the rarest, blood group among these students? Solution. The number of students who have a certain type of blood group is called the frequency of those blood groups. To make data more easily understandable, we write it in a table, as given below : Blood Group Number of students A 9 B 6 0 12 AB 3 Total 30 From table, we observe that the higher frequency blood group i.e., most common blood group is O and the lowest frequency blood group i.e., rarest blood group is AB. Ex 14.2 Class 9 Maths Question 2. The distance (in km) of 40 engineers from their residence to their place of work were found as follows : 5 3 10 20 25 11 13 7 12 31 19 10 12 17 18 11 32 17 16 2 7 9 7 8 3 5 12 15 18 3 12 14 2 9 6 15 15 7 6 12 Construct a grouped frequency distribution table with class size 5 for the data given above taking the first interval as 0-5 (5 not included). What main features do you observe from t...

NCERT Solutions Class 9 Maths Chapter 14 Statistics Exercise 14.3 are provided here. These solutions are prepared by expert teachers to guide you in your exam preparation. The solutions are always prepared by following NCERT guidelines, so that it covers the whole syllabus accordingly. Our CBSE NCERT Solutions for Class 9 Maths Chapter 14 Statistics Ex 14.3 Access NCERT Solutions for Class 9 Maths Chapter 14 Statistics – All Exercises Below we have provided the links to check solutions of the other exercises of the chapter. • • •