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Question
The mean of 15 observations is 32. Find the resulting mean, if the observation is: Decreased by 7
Sum
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Solution
Given that the mean of 15 observations is 32
resulting mean decreased by 7
= 32 - 7
= 25
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Properties of Mean
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Chapter 18: Mean and Median [For Ungrouped Data Only] - Exercise 18 (A) [Page 265]
