Important MCQs, Graphs & Case Study Questions | क्लास 9 Statistics Chapter 12 | Faiz Sir

Class 9 Maths Chapter 12 – Statistics (NCERT) | Important Extra & Advanced Questions इस वीडियो में Class 9 Statistics Chapter 12 के Important Extra, Advanced, MCQs, Competency-Based और Case Study Questions को detail में explain किया गया है, जो school exams, unit tests और board-oriented preparation के लिए बेहद जरूरी हैं। In this video, Faiz Sir (M.Sc. Maths with CS) from Infinix Classes Maths explains high-level and exam-oriented questions of Statistics Class 9, including: 📌 Topics Covered in this Video ✔ Range of Data ✔ Class Mark & Class Size ✔ Inclusive & Exclusive Class Intervals ✔ Bar Graph, Histogram & Frequency Polygon ✔ Grouped Frequency Distribution ✔ Competency Based Questions (CBQs) ✔ Case Study Based Questions (CBSE Pattern) ✔ Interpretation of Graphs 📚 Questions Included MCQs on Range, Class Mark & Class Size Graph-based Questions (Bar Graph, Histogram, Frequency Polygon) 5 Marks Numerical Questions Case Study Based Questions (4 Marks) Comparison of two frequency polygons 👉 This video is must-watch for students aiming full marks in Class 9 Maths – Statistics. 📌 Recommended for: Class 9 CBSE | NCERT | School Exams | Concept Clarity | Exam Revision #Class9Statistics #StatisticsClass9 #Chapter12Statistics #NCERTStatistics #Class9Maths #StatisticsImportantQuestions #CompetencyBasedQuestions #CaseStudyQuestions #Histogram #BarGraph #FrequencyPolygon #InfinixClassesMaths #FaizSirMaths #CBSEClass9 #MathsExamPreparation class 9 statistics, statistics class 9 chapter 12, class 9 maths statistics, ncert statistics class 9, statistics important questions class 9, class 9 statistics mcq, class 9 statistics extra questions, histogram class 9, bar graph class 9, frequency polygon class 9, case study questions statistics, competency based questions maths, cbse class 9 maths, class 9 maths by faiz sir, infinix classes maths, statistics full revision class 9, statistics exam questions, class 9 maths board preparation, statistics advanced questions, statistics practice questions CHAPTER - 12 STATISTICS By: Faiz Sir, M. Sc. Maths with CS Class – 9 | NCERT Q.1. The marks obtained by 17 students in a mathematics test (out of 100) are given below: 91, 82, 100, 100, 96, 65, 82, 76, 79, 90, 46, 64, 72, 68, 66, 48, 49. The range of the data is: A 46 B 54 C 90 D 100 Q.2. The class mark of the class 90 – 110 is A 90 B 20 C 100 D 110 Q.4. In the class intervals 70 – 80 and 80 - 90, the number 80 is included in: A 70 - 80 B 80 - 90 C both the intervals D None of these intervals Q.5. Two consecutive class marks of a distribution are 52 and 57, then the class size is A 5 B 54.5 C 50 D 10 Q.7. Five friends Anchal, Amisha, Mahi, Vaishu and Sahar are living in a hostel. At the end of every month, they calculate the expenses on food and shopping. The table below shows their monthly expenses for the month of November. (Competency based question) Which graphical representation would best represent the given data? A Histogram B Bar Graph C Frequency Polygon D Frequency polygon with histogram Q.11. The bar graph below depicts the number of students in various classes at a school. Read the bar graph and answer the following questions: (i) Find the class having the maximum number of students. (ii) Find the total number of students from classes 6 to 8. (Competency based question) Q.14. Heights (in cm) of 30 girls of Class IX are given below. Prepare a grouped frequency distribution table for this data with class size 5. 140, 140, 160, 139, 153, 153, 146, 150, 148, 150, 152, 146, 154, 150, 160, 148, 150, 148, 140, 148, 153, 138, 152, 150, 148, 138, 152, 140, 146, 148. Q.15. Draw a histogram to represent the following grouped frequency distribution: Q.16. Construct a frequency polygon for the following frequency distribution. Questions of 5 marks each Q.17. The following table shows a frequency distribution for the speed of cars passing through a particular spot on a highway. Draw a histogram with frequency polygon representing the given data. Q.18. The following table shows the distribution of students of sections A and B of a class according to the marks obtained by them: Represent the marks of the students of both the sections on the same graph by two frequency polygons. Q.19. The marks obtained (out of 100) by a class of 80 students are given below: Construct a histogram to represent the above data. Case study-based (4 marks) Q.20. The following histogram shows the heights of students of a class: Read the histogram and answer the following questions: (Competency based question) (i) What is the width of the class? (ii) Which is the class interval having the highest frequency? (iii) How many students have height less than 140 cm? (iv) How many students have height 140 cm and more but less than 155 cm?