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Find the value of Sigma f(i) for the fol...

Find the value of `Sigma f_(i)` for the following information :
(i) `Sigma f_(i)d_(i) = 800, bard = 8 " "(ii) Sigma f_(i)d_(i) = - 260, bar d = - 3.25`

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The correct Answer is:
`(i) Sigma f_(i) = 100; (ii) Sigma f_(i) = 80`
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NAVNEET PUBLICATION - MAHARASHTRA BOARD-STATISTICS-EXAMPLES FOR PRACTICE (MCQs)
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  2. Complete the following activity by filing the boxes : Here, L = ...

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  3. Find the value of Sigma f(i) for the following information : (i) Sig...

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  4. Find the value of Sigmaf(i) d(i) for the following information. (i) ...

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  5. Find the value of bar u for the following information : (i) A = 22.5...

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  6. Find the mean of the data given in the following table. {:("Class",0...

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  8. The age group of the number of persons in the age group who donated bl...

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  9. Find barX by step deviation method : Given : A = 2200. " "Sigma ...

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  10. The mean of the data by step deviation method is Rs. 1390. Find the as...

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  11. The mean of the data by step deviation method is 1896 . Find the value...

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  12. For each of the following frequencies distribution draw histogram : (...

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  13. A survey was conducted in Aadarsh Vidyalaya to know the inclination ...

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  14. The cost of living index and the number of weeks are given in the foll...

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  15. Marks ( out of 50) obtaned in Mathematics by 100 students is given in ...

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  16. Calculate the mean for the following data :

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  17. Calculate the mean of the following frequency distribution : (Use step...

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  18. Find the mode for the following :

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  19. Draw a frequency polygon from the information given in the following t...

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  20. The following table shows the number of patients of differents age gro...

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