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CLAT CLAT Solved Paper-2013

  • question_answer
    Table shows the daily expenditure on food of 25 households in a locality 100-150, 150-200, 200-250, 250-300 and 300-350 Households      4 5 12 2 2 The mean daily expenditure on food is

    A)  Rs 11.1                      

    B)  Rs 161

    C)  Rs 211                       

    D)  Rs 261

    Correct Answer: C

    Solution :

    Ans. 
    class interval
    100-150    150-200     200-250 250-300 300-350 125    175 225=A 275 325 4         5 12 2 2 -100    -50 0 50 100 -400    -250 50 100 200
    \[\therefore Mean\,\,A+\frac{\sum{{{d}_{i}}{{f}_{i}}}}{\sum{{{f}_{i}}}}\]= \[=225\,\,+\left( \frac{-400-250+0+100+200}{25} \right)\] \[=225-\frac{350}{25}\]= 225 - 14= Rs 211


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