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The mean of first three items is 14 and ...

The mean of first three items is 14 and mean of next two items is 18. The mean of all the five terms is :

A

14.5

B

`15.0`

C

15.2

D

15.6

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The correct Answer is:
D
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AAKASH SERIES-MEASURES OF DISPERSION (STATISTICS)-Practice Exercise
  1. If the mean of a set of observations x(1), x(2),….,x(10) is 20 then th...

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  2. The A.M. of the series .^(n)C(0), .^(n)C(1), .^(n)C(2),….,.^(n)C(n) ...

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  3. The mean of first three items is 14 and mean of next two items is 18. ...

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  4. Six faces of a balanced die are numbered from integers 1 to 6. This di...

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  5. The A.M. of set of 50 numbers is 38. If two numbers of the set, namely...

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  6. The simple and weighted arithmetic mean of the first n natural numbers...

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  7. The average salary of male employees in a firm was RS. 520 and that of...

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  8. The median of 25, 14, 11, 26, 18 , 17, 40, 29, 19, 20, 13 is

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  9. The median of 111, 129, 143, 118, 120, 125, 170, 162 is

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  10. The median of the following items 25,15,23,40,27,25,23,25 and 20 is

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  11. The test marks in statistic for a class are 20,24,27,38,18,42,35,21,44...

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  12. The mean of two samples of sizes 200 and 300 were found to be 25, 10 r...

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  13. The median of a series is 10. Two additional observations 7 and 20 are...

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  14. The mean and standard deviation of 20 items is found to be 10 and 2 re...

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  15. If in a moderately skewed distribution, the values of mode and mean ar...

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  16. The mode of a set of observation 7, 12,8,5,6,4,9,10,8,9,7,6,5,9 is

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  17. The mode of 3,3,7,4,5,3,5,6,8,9,5,3,5,3,6,9,7 ,4 is

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  18. For data 4,5,5,7,6,6,3,2,5,7,6,7 the number of modes is

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  19. Mode of 12,14,11,16,15,14,11,13,14 is

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  20. In a moderately skewed distribution, the values of mean and median are...

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