Intervals (litre) 3<5 5<7 7<9 9<11 11<13 S The standard deviation is closest to?
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To calculate the mean, we can use the formula: Mean = Σ(FM) / Σ(F) Mean = (4*2 + 6*3 + 8*9 + 10*5 + 12*1) / (2 + 5 + 14 + 19 + 20) Mean = (8 + 18 + 72 + 50 + 12) / 60 Mean = 160 / 60 Mean = 2.67 Show more…
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