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The following table gives the distributi...

The following table gives the distribution of total household expenditure (in rupees) of manual workers in a city. Expenditure: (in Rs.)          100-150                  150-200            200-250                  250-300            300-350                  350-400            400-450                  450-500 Frequency:             24         40                  33         28         30                  22         16         7 Find the average expenditure (in Rs.) per household.

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RD SHARMA ENGLISH-STATISTICS-All Questions
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  2. Find the mean of the following frequency distribution: Classes:       ...

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  3. The following table gives the distribution of total household expen...

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  14. Evaluate: (secthetacos e c(90^0-theta)-tanthetacot(90^0-theta)+sin^2 5...

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  15. If sectheta+tantheta=p , prove that sintheta=(p^2-1)/(p^2+1)

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  16. Prove that in a triangle, if the square of one side is equal to the su...

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  17. Prove that : (sectheta+tantheta-1)/(tantheta-sectheta+1)=(costheta)/(1...

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  18. Find all zeros of the polynomial 2x^4+7x^3-19 x^2-14 x+30 , if two of ...

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