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The standard Deviation of 30 observation...

The standard Deviation of 30 observation of a sample is 4.5 If each observation be subtracted 10, the find the new standard deviation of the resulting observations.

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Verified by Experts

We know the standard deviation does not depend on the choice of origin.
So, New standard deviation of final sample is also 4.5.
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PATHFINDER-STATISTICS-QUESTION BANK
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  2. Find the range for the following frequency distribution :

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  3. The standard Deviation of 30 observation of a sample is 4.5 If each ob...

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  4. If the SD of the first numbers even integers be sqrt40, then find numb...

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  5. Find the mean and variance of the data : 5, 9, 8, 12, 6, 10, 6, 8

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  6. Find the SD of first 10 multiples of 3.

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  7. Calculate the mean deviation about median from the data : 340, 150, 21...

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  8. The variance of 20 observations is 5. If each observation be multipli...

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  9. The mean and standard deviation of observations are 8 and 14 respectiv...

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  10. Calculate the mean and standard deviation of the numbers-natural numbe...

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  11. The scores of batsman in 10 matches were as follows : 38, 70, 48, 34, ...

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  12. Prove that if x1and x2 two values of a variable x, so its standard dev...

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  13. Find the mean deviation about the mean of the data : 7, 8, 4, 13, 9, 5...

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  14. Find the mean deviation about the mean of the data : 7, 8, 4, 13, 9, 5...

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  15. Find the SD of first 10 multiples of 3.

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  16. The mean and variance of seven observations are 8 and 16 respectively....

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  17. The mean and variance of seven observations are 8 and 16 respectively....

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  18. The mean and standard deviation of 100 observations were calculated as...

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