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Question
Find the mean of 8, 12, 16, 22, 10 and 4. Find the resulting mean, if each of the observations, given above, be: increased by 25%
Sum
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Solution
New Mean = Original mean + 25% of original mean
⇒ New mean = 12 + 25% of 12
⇒ New mean = 12 +`25/100 xx 12`
⇒ New mean = 12 + `1/4 xx12`
⇒ New mean = 12 + 3
⇒ New mean = 15
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Properties of Mean
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Chapter 18: Mean and Median [For Ungrouped Data Only] - TEST YOURSELF [Page 268]
