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The mean of 25 observations is 72. It wa...

The mean of 25 observations is 72. It was detected that one observation 53 was wrongly copied as 78. Find the correct mean.

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71
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NAGEEN PRAKASHAN ENGLISH-STATISTICS-Exercise 14c
  1. Find the mean of the following data. (i) 3, 5, 3, 4, 2, 0, 7 and 10 ...

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  2. Find the arithmetic mean of first 6 natural numbers.

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  3. Find the mean of all factors of 10.

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  4. Find the mean of integers from -4 to 5.

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  5. The mean of 3, a+2, 8, 12, 2a-1 and 6 is 7, find the value of a.

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  6. The mean of 16, 19, P, 21, 25, 28 is 22, find the value of P.

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  7. The mean of 20 observations is 30. If the mean of first 15 observation...

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  8. The mean of 25 observations is 72. It was detected that one observatio...

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  9. The mean monthly salary of 8 teachers is ₹ 32,000. When the salary of ...

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  10. Find the mean of the frequency distribution: (ii) The weight of ...

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  11. Find the median of (i) 7, 11, 25, 45, 23, 12, 11, 9, 10 (ii) 15,...

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  12. Find the median of first 7 prime numbers.

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  13. Find the median of first 10 even natural numbers.

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  14. The following data have been arranged in ascending order. If their med...

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  15. Find the mode of (i) 7, 7, 8, 10, 10, 11,13, 14 (ii) 4, 5, 6, 7, ...

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  16. Find the mode of following data:

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  17. Find the mode of following data:

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  18. Find the mean, median and mode of the following data: 19, 7, 7, 25,...

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  19. Find the sum of deviations of the following data measured from their a...

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  20. The weights of 9 boxes in kgms are as follows: 27.5, 31.2, 28.0, 32...

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