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The marks scored by 40 students in a Mat...

The marks scored by 40 students in a Mathematics test are given below:

Prepare the frequency distribution with classes 0-4, 5-9.....

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Find the mean variance of the frequency distribution given below :

The information regarding the marks scored by 30 students in a 20 mark test of Mathematics is given below: Find the mean of the data.

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Following are the marks obtained by 9 students in a mathematics test : 50, 69 , 20, 33, 53, 39, 40, 65 and 59 The mean deviation from the median is …………

The heights of 50 students, measured to the nearest centimetres, have been found to be as follows: (i) Represent the data given above by a grouped frequency distribution table, taking the class intervals as 160 - 165,165-170, etc. (ii) What can you conclude about their heights from the table ?

KUMAR PRAKASHAN-STATISTICS-SKILL TESTING EXERCISE
  1. The marks scored by 40 students in a Mathematics test are given below:...

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  2. The weights (in kg) of 30 girls of Primestreet Society are as below: ...

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  3. The marks scored by 40 students in a 60 mark test of english are as fo...

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  4. The information on the height (in cm) of 30 children is given below : ...

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  5. The following data on the number of girls (to the nearest ten) per tho...

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  6. Draw a histogram for the frequency distribution :

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  7. 100 surnames were randomly picked up from a local telephone directory ...

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  8. Draw a frequency polygon for the following frequency distribution :

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  9. The weight (in kg) of seven students are given below: 35, 30, 42, 36, ...

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  10. The information regarding the marks scored by 30 students in a 20 mark...

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  11. The height (in cm) of 100 students of a school are tabulated below: ...

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  12. Find the median of the observations 13, 9, 15, 8, 6, 3.

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  13. Find the median of the observations 12, 41, 34, 26. 31, 22, 10.

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  14. Find the mode of the observations 17, 10, 13, 18, 22, 13, 26, 9, 13, 1...

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  15. Find the mode of the observations 25, 20, 16, 12, 20, 16, 19, 23, 31, ...

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  16. Find the mean, the median and the mode of the observations 24, 12, 15,...

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  17. Some observations are arranged in the ascending order as 9, a +3, a +7...

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  18. The mean of 5 observations is 20. Including one new observation, the m...

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  19. The mean of 10 observations is 28. If 2 is added to each observation a...

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  20. Find the mean of the following frequency distribution:

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