# 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

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

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