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The harmonic mean of 3, 7, 8, 10, 14, is...

The harmonic mean of 3, 7, 8, 10, 14, is

A

`(3+7+8+10+14)/5`

B

`(1)/(3)+(1)/(7)+(1)/(8)+(1)/(10)+(1)/(14)`

C

`((1)/(3)+(1)/(7)+(1)/(8)+(1)/(10)+(1)/(14))/5`

D

`5/((1)/(3)+(1)/(7)+(1)/(8)+(1)/(10)+(1)/(14))`

Text Solution

Verified by Experts

The correct Answer is:
D
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PATHFINDER-STATISTICS AND MATHEMATICAL REASONING-QUESTION BANK
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  2. The harmonic mean of 4, 8, 16, is

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  3. The harmonic mean of 3, 7, 8, 10, 14, is

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  4. Product of n positive number is unity. The sum of these numbers can n...

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  5. In an arranged series of n observations (n being an odd number), the ...

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  6. The median of 10, 14, 11, 9, 8, 12, 6, is

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  7. If a variable takes the discrete values alpha+4 , alpha-(7)/(2), alpha...

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  8. In an arranged discrete series in which total number of observations ...

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  9. The mode of following items 0, 1, 6, 7, 2, 3, 7, 6, 6, 2, 6, 0, 5, 6,...

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  10. Choose the correct answer: The hybridisation of the carbon atom (under...

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  11. For a normal distribution, we have

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  12. The relationship between mean median and mode for a moderately skewed ...

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  13. If the mode of a data is 18 and the mean is 24 then median is

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  14. Which of the following is not a measure of dispersion ?

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  15. For a frequency distribution, mean deviation about mean is computed by

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  16. The mean for the observation 1, 2, 3,4 is

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  17. The variance of 2, 4, 6, 8, 10, is

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  18. The S.D of 7 scores 1, 2, 3, 4, 5, 6, 7, is

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  19. If the standard deviation of 1, 2, 3, 4,…., 10 is sigma , then the sta...

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  20. S.D. of numbers observation a1, a2, a3,…..an is sigma then the S.D. of...

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