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Find 'mean' and 'mode' of the following data :
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Correct table ($1\frac{1}{2}$ marks)
Mean $= 27.5 + 5 \times \frac{6}{60} = 28$ ($1\frac{1}{2}$ marks)
Modal class is $25 - 30$
Mode $= 25 + 5 \times \frac{15 - 10}{30 - 10 - 11} = 27.78$ ($1\frac{1}{2} + \frac{1}{2}$ marks)
Mean $= 27.5 + 5 \times \frac{6}{60} = 28$ ($1\frac{1}{2}$ marks)
Modal class is $25 - 30$
Mode $= 25 + 5 \times \frac{15 - 10}{30 - 10 - 11} = 27.78$ ($1\frac{1}{2} + \frac{1}{2}$ marks)