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The following table shows marks in Engli...

The following table shows marks in English secured by students of Class X in your school in their examination. Calculate mean marks using Direct Method.
`{:("Marks",0-10,10-20,20-30,30-40,40-50),("Number of Students"," "20," "24," "40," "36," "20):}`

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`barX=(sumfm)/(sumf)=(3,620)/(140)=25.86`
Mean Marks = 25.86.
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