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The mean of 8 numbers is 25. If each num...

The mean of 8 numbers is 25. If each number is multiplied by 2, the new mean will be

A

12.5

B

25

C

40

D

50

Text Solution

Verified by Experts

The correct Answer is:
D
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MCGROW HILL PUBLICATION-STATISTICS -MULTIPLE CHOICE QUESTIONS
  1. The sum of the deviations of the variates 6, 8, 10, 16, 20, 24

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  2. The mean of 20 numbers is 9. If 3 is added to every number what will b...

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  3. The mean of 8 numbers is 25. If each number is multiplied by 2, the ne...

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  4. The mean age of combined group of men and women is 35 years. If the me...

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  5. The median of the first 12 prime numbers is

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  6. Out of a total of 20 observations arranged is ascending order 10^(th) ...

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  7. Mode of the distribution is that value of the variate for which the i...

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  8. There are 50 numbers. Each number is subtracted from 53 and the mean o...

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  9. Class mark of class interval 60–70 is

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  10. Class mark of a particular class is 6.5 and class size is 3, then clas...

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  11. The mean of the factors of 24 is:

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  12. What is the arithmetic mean of the squares of first five natural numbe...

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  13. If the mean of the observations: x, x + 3, x + 5, x + 7, x + 10 is 9, ...

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  14. If barx(1), barx(2), barx(3),………barx(n) are the means of n groups with...

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  15. The mean of 100 observation is 50. If one of the observation which was...

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  16. The arithmetic mean of the cubes of first four natural numbers is

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  17. The mean of 11 numbers is 35. If the mean of the first 6 numbers is 32...

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  18. The mean of six numbers is 20. If one number is excluded, the mean is ...

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  19. If m is the mid-point and l is the upper limit of a class in a contino...

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  20. The class marks of a frequency distribution are given as follows 15,20...

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