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Find bar(u) in the following cases : (...

Find `bar(u)` in the following cases :
(i) `sumf_(i)u_(i)=-5,sumf_(i)=50` (ii) `sumf_(i)u_(i)=21,sumf_(i)=36`

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The correct Answer is:
`bar(u)=(sumf_(i)u_(i))/(sumf_(i))=(-5)/(50)=-0.1` (ii) `bar(u)=(sumf_(i)u_(i))/(sumf_(i))=(21)/(36)=(7)/(12)`
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NAVNEET PUBLICATION - MAHARASHTRA BOARD-STATISTICS-EXAMPLES FOR PRACTICE (MCQs)
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  2. A survey of students was made to know which games they like. The numbe...

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  3. The sale by some dealers in a week is represented by a pie diagram. Th...

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  4. The class mark of the class 2000-2500 is taken as assumed mean. What i...

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  5. In the frequency table showing the amount invested in health insurance...

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  6. What is the class mark of the class 100 - 190 ?

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  7. Find the value of the mean barX , " if " Sigma f(i) x(i) = 30 " and " ...

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  8. Which of the following is the formula for finding mean (bar(X)) by ass...

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  9. Method to calculate Mean by Step-Deviation method

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  10. Which of the following is not a measure of central tendency

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  11. The value of mean is 56.8 " and " Sigmax(i)f(i) = 2840. What is the v...

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  12. In a tree plantation programme, 40 students planted various number of ...

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  13. Find the class mark of the class 35-39 . What is the next consecutive ...

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  14. What is the value of g for the class 200 - 250 ? What is the class mar...

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  15. Complete the following activity by filing the boxes : Here, L = ...

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

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

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

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

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  20. The following table shows the percentage of vehicles passing a signal....

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

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