InterviewSolution
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InterviewSolution
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\left. \begin{array} { | c | c | c | c | c | c | } \hline \text { Class } & { 0 - 10 } & { 10 - 20 } & { 20 - 30 } & { 30 - 40 } & { 40 - 50 } \\ \hline \text { Frequency } & { 5 } & { 18 } & { 15 } & { p } & { 6 } \\ \hline \end{array} \right. |
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Answer» mid points of all classes=5,15,25,35,45arithmetic mean=25so (5×5+15×18+25×15+35p+45×6)/(44+p)=25940+35p=1100+25pso 10p=160so p=16 |
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