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Mean of the data   x1 , x2 , x3 , x4 , x...

Mean of the data   `x_1 , x_2 , x_3 , x_4 , x_5`  is 15. If each observation is multiplied 3, then the mean becomes

A

5

B

45

C

18

D

12

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VGS PUBLICATION-BRILLIANT-STATISTICS-EXERCISE
  1. Formula to find mean for a grouped data is

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  2. Mode of the data 3, 7, 8, 8, 7, 6, 8, 4, 3, 11 is

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  3. Mean of the data   x1 , x2 , x3 , x4 , x5  is 15. If each observation ...

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  4. If the mean of the data 12, 8, 6, 3, 9 is 7.6. If 5 is added to each o...

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  5. Mean of the data 8, 7, 6, 14, 12, 10, 20, 16, 15 and 14 is 12.2. If ea...

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  6. The median of n observations arranged in ascending order when n is eve...

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  7. A data having two modes is

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  8. The mode of the data 8, 5, 3, 8, 3, 6, 5, 3, 7, 5 and 11 is

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  9. The difference between any two lower limits is called

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  10. The mean of the observations x-1, x and x + 1 is

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  11. The median of first 10 natural numbers is

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  12. 30-39, 40-49, 50-59 .. తరగతులు .. రకపు తరగతులు .

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  13. The mode of the distribution 2, 5, 7, 5, 3, 1, 5, 8, 7, 5 is

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  14. The median of the observations 15, 12, 14,20,16,10 is

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  15. Mid values are used to calculate ..........

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  16. Which of the following is not a measure of central tendency ?

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  17. The mode of the observations 8, 9, 10, 11, 12, 8, 9, 12, 9, 8, 9, 11, ...

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  18. The median of the observations 6, 21, 9, 19, 15 and 13 is

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  19. The lower limit of the class 60 - 69 is

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  20. The upper limit of the class 30-40 is

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