Average Practice Test 4

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Question : 15 of 40

Marks: +1, -0

Average of ten positive numbers is

\ov x

. If each number is increased by 10%, then

\ov x

:

is increased by 10%
may increase
may decrease
remains unchanged

Solution:

Here, new average

={10×\ov x+10×1/10\ov x}/10=11/10\ov x

Hence, new mean is increased by 10%.

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