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mbona ya fani yangu huwa hamuulizi au mnayajua sana??
Hamuwezi hata kujisomea kweli? Unashindwa kufanya hw unaleta humu? Jf watakuwepo kwenye mtihani wako?
Variance, take each different of the frq from the mean (normally the centre) then square it and plus those differents, the answer you get devide by N (total number of frq)
MEAN: A+(CEFU)/N Where A=assumed mean C=class size E=summatio(sigma notation F=frequency N=Total frequencies/numbers U= (d/c) where d=deviation and c=class size
Kama kichwa cha habari kinavyoonyesha.
Nisaidieni ile formula inayoitwa CODING METHOD iliyopo katika topic ya STATISTICS inayotumika kutafuta MEAN,STANDARD DEVIATION na VARIANCE
Natanguliza shukrani.
Hiyo ni njia ya O-level ya kawaida,na wala siyo coding method.