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The mean of 16 items was found to be 30....

The mean of 16 items was found to be 30. On rechecking, it was found that two items were wrongly taken as 22 and 18 instead of 32 and 28, respectively. Find correct mean.

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RD SHARMA ENGLISH-MEASURES OF CENTRAL TENDENCY-All Questions
  1. Find the value of p, if the mean of the following distribution is 7...

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  2. Find the missing frequencies in the following frequency distribution i...

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  3. The mean of 16 items was found to be 30. On rechecking, it was found t...

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  4. The mean monthly salary of 10 members of a group is Rs. 1445, one m...

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  5. Find the mean of the following distribution: x: 4 6 9 10 ...

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  6. Following table shows the weights of 12 students: Weight (in kgs):...

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  7. If the mean of n observation a x1, a x2, a x3, ,a xn is a barX , ...

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  8. If the mean of 6, 4, 7, p and 10 is 8, find the value of p.

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  9. Find the sum of the deviations of the variate values 3,4,6,8, 14 from ...

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  10. The mean of 40 observations was 160. It was detected on rechecking ...

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  11. If the heights of 5 persons are 144 cm, 152cm, 151cm, 158 cm and 155...

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

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  13. Find the arithmetic mean of first ten odd natural numbers

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  14. The weights (in kg) of 15 students are: 31, 35, 27, 29, 32, 43, 37, ...

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  15. Find the median of the following data: 19, 25, 59, 48, 35, 31, 30, 32,...

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  16. Find the mode from the following data: 110,120,130,120,110,140,130,120...

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  17. If the heights of 5 persons are 144cm, 152cm, 151cm, 158cm and 155c...

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  18. Find the arithmetic means of first 6 natural numbers.

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  19. Find the arithmetic mean of first ten odd natural numbers.

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  20. If the mean of n observations ax1, ax2, ax3, ...., axn is aX show that...

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