Question : Calculate the mean from the following table.
Option 1: 34.2
Option 2: 33.4
Option 3: 32.6
Option 4: 35.8
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Correct Answer: 33.4
Solution :
Mean = $\frac{\sum \text{ (Mid Point × Frequencies)}}{\sum \text{Frequencies}}$ = $\frac{10+60+300+735+270+165+130}{2+4+12+21+6+3+2}$ = $\frac{1670}{50}$ = 33.4 Hence, the correct answer is 33.4.
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