If the average of the first n numbers in...

If the average of the first n numbers in the sequence 148, 146, 144,….., is 125, then n =

A

18

B

24

C

30

D

36

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The correct Answer is:

B

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AAKASH SERIES-MEASURES OF DISPERSION (STATISTICS)-Exercise - I

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The mean of n items is bar(x). If the first item is increased by 1, se...
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Mean of a set of numbers is bar(x). If each number is increased by lam...
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The median of a set of 9 distinct observations is 20.5. If each of the...
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Mode of the following distribution is
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