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The mean of discrete observation y1, y2,...

The mean of discrete observation `y_1, y_2,…y_n` is given by

A

`sum_(i=1)^n(y_i)/(n)`

B

`(sum_(i=1)^ny_i)/(sum_(i=1)^ni`

C

`(sum_(i=1)^ny_i f_1)/n`

D

`(sum_(i=1)^ny_i f_1)/(sum_(i=1)^nf_1`

Text Solution

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The correct Answer is:
A
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PATHFINDER-STATISTICS AND MATHEMATICAL REASONING-QUESTION BANK
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  3. The mean of discrete observation y1, y2,…yn is given by

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  4. The mean of 130, 126, 68, 50, 1 is

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  5. If di is the deviation of a class mark yi from 'a' the ' assumed mean ...

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  6. The mean of first three terms is 14 and mean of next two terms is 18. ...

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  7. Geometric mean of the numbers 2, 2^2, 2^3, ….,2^(n) numbers is

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  8. The geometric mean of numbers observations x1, x2, x3,….,xn is

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  9. The geometric mean of numbers observations 4, 8, 16, is

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  10. The harmonic mean of 4, 8, 16, is

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

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

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

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

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

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

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

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

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  19. For a normal distribution, we have

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

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