# Mean, Median, Mode

mean =
Median : Median is the middle term in the collected data. In case of even number of terms, take average of middle terms.
median =
L-lower limit of median class
N-total frequency = Î£ fi
h -width of median class.
C-cumulative frequency upto class preceding median class
f -cumulative frequency of median class
Mode : It is the value that occur most frequently or it is the value with maximum frequency.
mode =  Ã— h
L-lower limit of class certaining mode
fi-maximum frequency
fiâ€“1-frequency preceding fi
fi+1-frequency just after fi
h-size of model class

Points to be noted
• For asymmetric distribution : mean = medians = mode
• For normal distribution : mean â€“ mode = 3(mean â€“ median).