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The median and S.D. of a distribution are 20 and 4 respectively. If each item is increased by 2, the new median and S.D. are:

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20, 6

22, 6

18, 6

22, 4

answer is D.

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Detailed Solution

If each item is increased by 2, the new median is increased by 2

and S.D. remain same. There fore: Median = 22, SD = 4

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