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The yields of wheat for 50 experimental ...

The yields of wheat for 50 experimental fields are given below. Find the average yield and hence find its variance.

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MODERN PUBLICATION-STATISTICS-EXERCISE
  1. From the data given below, state which group is more variable :

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

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

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

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

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  6. The following values are calculated in respect of heights and weights ...

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  7. The sum and sum of squares corresponding to length x (in cm) and weigh...

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  8. From the data given below, state which group is more variable, A or B ...

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  9. From the prices of shares X and Y below, find out which is more stable...

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  10. The following is the record of goals scored by team A in a football se...

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  11. The mean of first 11 terms of Fibonacci sequence : 1,1,2, 3, 5, 8, 13,...

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  12. If each of the observations x1, x2, ....xn is increased by an amount ‘...

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  13. Find the mean and standard deviation for the following data :

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  14. Find the average earnings (using step-deviation method) and the standa...

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  15. The yields of wheat for 50 experimental fields are given below. Find t...

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  16. The mean and standard deviation of marks obtained by 50 students of a ...

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  17. From a frequency distribution consisting of 18 observations, the mean ...

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  18. The mean and standard deviation of 20 observations are found to be 10 ...

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  19. The mean and standard deviation of 20 observations are found to be 10 ...

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  20. The mean and standard deviation of a group of 100 observations were fo...

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