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MATHEMATICS

JAMB 2016 - Question 45

Mathematics 2016 JAMB Past Questions - Question 45: Find the mean of 10,8,11,12,9,6,3,15 and 23.

Find the mean of 10,8,11,12,9,6,3,15 and 23.

A: 11.2

B: 10

C: 10.2

D: 11.3

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Correct Answer

Explanation

Ex = 10 +8 +5 +11 +12 + 9 + 6 +3 +15 +23= 102 4/3 n = 10Hence, mean, x = Ex / n= 102 /10 = 10.2To find the mean of a set of numbers, you add up all the numbers and then divide by the total number of values.Mean = (10 + 8 + 11 + 12 + 9 + 6 + 3 + 15 + 23) / 9Mean = 107 / 9Mean ≈ 11.89Therefore, the mean of the given set of numbers is approximately 11.89.