Hey Students, My name is Tushar. In this video we will discuss Question - 8 of Chapter -13, Ex - 13.1 of Class - 9th NCERT Math's.

Class 10 Exercise 10.2 Question 1 | CBSE Class 10 Ex -10.2 Q1 | NCERT | Class 10 Maths Chapter 10

Class 12 maths ncert solution chapter vector algebra Ex-10.2 Qno.1

The number of students absent in a school was recorded every day for 147 days and the raw data was presented in the form of the following frequency table. No. of Student absent: 5 6 7 8 9 10 11 12 13 15 18 20 No. of days 1 5 11 14 16 13 10 70 4 1 1 1 Obtain the median and describe what information it conveys.

Construct a frequency table for the following ages (in years) of 30 students using equal class intervals, one of them being 9-12, where 12 is not included. 18, 12, 7, 6, 11, 15, 21, 9, 8, 13, 15, 17, 22, 19, 14, 21, 23, 8, 12, 17, 15, 6, 18, 23, 22, 16, 9, 21, 11, 16.

Median of a distribution is the value of the variable which divides it into equal parts . In case of individual observations x_1,x_2 .. x_n , if the number of observations is odd, then median is the value of ((n+1)/2) th observation when the observations have been arranged in ascending or descending order of magnitude. In case of even number of observations median is the A.M. of the values of (n/2) th and (n/2+1) th observations, arranged in ascending or descending order of magnitude . The mode of distribution is that value of the variable for which the frequency is maximum . Median of the distribution 8,5,7,9,13,11,20,23 , 25 ,28 , 27 is

The marks obtained by 40 students of class IX in an examination are given below: 18, 8, 12, 6, 8, 16, 12, 5, 23, 2, 16, 23, 2, 10, 20, 12, 9, 7, 6, 5, 3, 5, 13, 21, 13, 15, 20, 24, 1, 7, 21, 16, 13, 18, 23, 7, 3, 18, 17, 16 Present the data in the form of a frequency distribution using the same class size, one such class being 15-20 (where 20 is not included)

Which of the following sentences are statement ? Justify your answer : (1) sqrt(5) is a rational number. (2)it is a cold day today. (3)The product of 8 and 2 is 16. (4)how many teachers are there in your school ? (5)the sum of interior angles of a quadrilateral is 360^@ . (6)go to your room. (7)15 is smaller than 12. (8)there are 7 days in a week. (9)the earth revolves around the sun. (10) 16 has two prime factros. (11) the H.C.F. of 15 and 20 is 16. (12)the L.C.M. of 8 and 12 is 24. (13) the three sides of equilateral triangle are equal. (14) New Delhi is the capital of india. (15) six is a prime number. (16) it was Saturday yesterday. (17) the least natural number is one. (18) maths is an easy subject.