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Calculate the mean and variance of the following distribution :

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MODERN PUBLICATION-STATISTICS-EXERCISE
  1. Calculate the mean and variance of the following data :

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  2. Calculate the mean and variance of the following data :

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  3. Calculate the mean and variance of the following distribution :

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  4. Calculate the mean and standard deviation of the distribution :

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  5. Calculate the mean and standard deviation of the distribution :

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  6. Calculate the mean and standard deviation of the distribution :

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  7. Calculate the mean and standard deviation of the distribution :

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  8. Calculate the mean and standard deviation of the distribution :

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  9. Calculate the mean and standard deviation of the distribution :

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  10. Calculate the mean and standard deviation of the distribution :

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  11. Calculate the mean and standard deviation of the following distributio...

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  12. Calculate the mean and standard deviation of the following distributio...

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  13. Find the mean , variance and standard deviation :

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  14. In a survey of 950 families in a village, the following distribution o...

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  15. The diameters of circles (in mm) drawn in a design are given below : ...

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  16. From the data given below, state which group is more variable :

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  17. In a study to test the effectiveness of new variety of seeds, an exper...

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  18. The weights of a group of children at 6 month are given below: Find...

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  19. In the study of 79 diabetic patients, the following data are obtained....

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  20. Two plants A and B of a factory show following results about the numbe...

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