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The mean of 35 observations in 20, out f...

The mean of 35 observations in 20, out fo which mean of first 18 observation is 15 and mean of last 18 observation is 25, find the `18^(th)` observations.

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CHETANA PUBLICATION-STATISTICS-Exercise
  1. The mean of 35 observations in 20, out fo which mean of first 18 obser...

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  2. Which of the following data is not primary?

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  3. What is the upper class limit for the class 15-35?

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  4. What is the class mark of class 25-35?

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  5. If the classes are 0-10, 10-20,20-30… then in which class should the o...

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  6. The mean of five numbers is 50, out of which mean of 4 numbers is 46, ...

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  7. mean of 100 observations is 40. The 9 observation is 30. If this is re...

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  8. What is the mode of 19, 19, 15, 20, 25, 15, 20, 15?

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  9. What is the median of 7, 10, 7, 5, 9, 10?

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  10. From following table, what is the cumulative frequency of less than ty...

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  11. The mean of the data 87, 92, 63, 78, 92, 59, 72, 66, is……..

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  12. The mark of a class test are given below 28, 26,17, 12, 14, 19, 27, 26...

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  13. The mode of 18, 14, 22, 23, 14, 18, 17, 18, 28, 28, 14, 25, 14 is……………

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  14. The mean of eleven number is 47. If a number is added then the mean is...

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  15. A cricket player scored run in different matches as follows : 36, 41, ...

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  16. Classify following information as primary data or secondary data. Numb...

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  17. Classify following information as primary data or secondary data.Numbe...

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  18. Classify following information as primary data or secondary data.Elect...

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  19. Classify following information as primary data or secondary data.Elect...

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  20. Classify following information as primary data or secondary data. Lete...

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  21. All 30 members of a 'Nature Club' in a school planted trees in the fou...

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