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The mean marks of boys and girls in an e...

The mean marks of boys and girls in an examination are 70 and 73, respectively. If the mean marks of all the studetns in that examinatin is 71, find the ratio of the number of boys to the number of girls.

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MODERN PUBLICATION-STATISTICS-EXERCISE
  1. The mean marks of boys and girls in an examination are 70 and 73, resp...

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  2. Define Statistics as a subject.

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  3. Define Few fundamental characterstics of Statistics.

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  4. Define primary and secondary data. Which of them is more reliable and ...

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  5. Explain the meaning of the following terms: variate.

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  6. Explain the meaning of the following terms: class interval.

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  7. Explain the meaning of the following terms: class size.

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  8. Explain the meaning of the following terms: class mark.

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  9. Explain the meaning of the following terms: frequency of a class

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  10. Explain the meaning of the following terms: cumulative frequency of a ...

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  11. Explain the meaning of the following terms: true class limits

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  12. Write the class size in each of the folowing 0-4,5-9,10-14

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  13. Write the class size in each of the folowing 10-19,20-29,30-39

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  14. Write the class size in each of the folowing 100-120,120-140,140-160

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  15. Write the class size in each of the folowing 0-0.25,0.25-0.50,0.50-0.7...

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  16. Write the class size in each of the folowing 5-5.01, 5.01-5.02, 5.02-5...

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  17. The final makrs in Mathematics of 30 students are as follows {:(53,61,...

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  18. The final makrs in Mathematics of 30 students are as follows {:53,61,4...

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  19. The final makrs in Mathematics of 30 students are as follows {:(53,61,...

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  20. The final makrs in Mathematics of 30 students are as follows {:(53,61,...

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  21. The final makrs in Mathematics of 30 students are as follows {:53,61,4...

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