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Find 'mean' and 'mode' of the following data:
begin{tabular}{|l|c|c|c|c|c|c|}
hline Class & 0-15 & 15-30 & 30-45 & 45-60 & 60-75 & 75-90
hline Frequency & 11 & 8 & 15 & 7 & 10 & 9
hline
end{tabular}
begin{tabular}{|l|c|c|c|c|c|c|}
hline Class & 0-15 & 15-30 & 30-45 & 45-60 & 60-75 & 75-90
hline Frequency & 11 & 8 & 15 & 7 & 10 & 9
hline
end{tabular}
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Correct table
Mean $= 37.5 + 15 \times \frac{24}{60} = 43.5$
Modal class is $30 - 45$
Mode $= 30 + 15 \times \frac{15-8}{30-8-7} = 37$
Mean $= 37.5 + 15 \times \frac{24}{60} = 43.5$
Modal class is $30 - 45$
Mode $= 30 + 15 \times \frac{15-8}{30-8-7} = 37$