7. Find the mean and median of the following:
11, 14, 15, 14, 17, 19
If x is added to the numbers, the new mean
is 14, find x.
Answers
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3
Answer :
Mean = 15
Median = 14.5
x = -1
Solution :
Given,
Data : 11, 14, 15, 14, 17, 19
To find :
Mean and median
Explanation :
Ascending order : 11, 14, 14, 15, 17, 19
Mean = sum of terms ÷ no. of terms
= 90 ÷ 6
= 15
Median = (14 + 15)/2
= 14.5
If x is added to the numbers, the new mean
is 14.
15 + x = 14
x = -1
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