Derivation of mean, mode, and median:

Question

anonymous · Answer

Mean = sum of observations divided by the number of observations.
Mode = the observation that occurs most frequently.
Median = value of the middle observation if uneven number of observations, or the average of the two middle if even number of observations

anonymous · Answer

OH yes I know :) but I want the derivation of those scary looking formulas in case of continuous series (grouped data)

anonymous · Answer

hmm, okay - back to Mum for me ;)

anonymous · Answer

The one that uses cumulative frequency an all. 

Sure thing tell her I said "HI" and thanks in advance :)

anonymous · Answer

haha, will do. Sorry I didn't ask correctly the first time ;)

anonymous · Answer

No problem :)

anonymous · Answer

Median = value of the middle observation if uneven number of observations, or the average of the two middle if even number of *sorted* observations ;)

anonymous · Answer

http://letmegooglethat.com/?q=what+is+the+definition+of+mean+median+and+mode

anonymous · Answer

lol