Find the mean of the following distribution.Marks obtained by 40 students in an exam are given below.Marks2530152024Number of Students8121064
Question
Find the mean of the following distribution.Marks obtained by 40 students in an exam are given below.Marks2530152024Number of Students8121064
Solution
To find the mean of the distribution, we need to multiply each mark by the number of students who obtained that mark, sum up these products, and then divide by the total number of students.
Here's how to do it:
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Multiply each mark by the number of students who obtained it:
25 * 8 = 200 30 * 12 = 360 15 * 10 = 150 20 * 2 = 40 24 * 6 = 144
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Sum up these products:
200 + 360 + 150 + 40 + 144 = 894
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Divide this sum by the total number of students:
894 / 40 = 22.35
So, the mean mark obtained by the students is 22.35.
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