Q. 63.9( 9 Votes )

In a group of 10 students, marks obtained in a subject are as follows: 23, 22, 45, 38, 49, 23, 45, 10, 45, 39. Find the following:
(i) Mean marks of class
(ii) Median marks of class
(iii) Modal marks of class

Answer :

To Find:

(i) Mean marks of class


(ii) Median marks of class


(iii) Modal marks of class


Given: Marks obtained


Concept Used:



Median = Middle term


Mode = Observation is occurring the most number of times.


Explanation:


Sum of observations = 23 + 22 + 45 + 38 + 49 + 23 + 45 + 10 + 45 + 39 = 345


Number of observations = 10



Arranging the observations in increasing order,


10, 22, 23, 23, 38, 39, 45, 45, 45, 49


As the number of terms are even, median will be the average of


Median


Median = 38.5


Mode = Observation that occurs the most number of time = 45(3 times)


Therefore,


Mean = 33.9


Median = 38.5


Mode = 45


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Quiz | Median and ModeQuiz | Median and ModeQuiz | Median and Mode29 mins
Quiz | Basics of  MeanQuiz | Basics of  MeanQuiz | Basics of Mean37 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses