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HOMOGEN DANHETEROGEN DATAI. 50,50,50,50,50

II. 30,40,50,60,70

III.20,30,50,70,80

50X =

Ketiga kelompok data mempunyaiKetiga kelompok data mempunyai

rata-rata hitung yang sama, yaitu :rata-rata hitung yang sama, yaitu :

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DISPERSI DATAUkuran pn!"aran #ua$u k%&'p&k (a$a$r)a(ap pu#a$ (a$a.

*n+#n!a - D+#pr#+ 'u$%ak

/ *ankauan 1Ran/ S+'panan Ra$a/ra$a 1Man D+a$+&n

/ ar+an#+ 1ar+an/ S$an(ar D+a#+ 1S$an(ar$ D+a$+&n/ S+'panan uar$+% 1uar$+% D+a$+&n

2 D+#pr#+ r%a$++n ar+a#+ 19&+n$ & ar+a$+&n

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-. *ANGAUANr : n+%a+ 'ak#+'u' ; n+%a+ '+n+'u'

S'ak+n k+% n+%a+ r 'aka kua%+$a# (a$a akan#'ak+n "a+k, #"a%+kn!a #'ak+n "#arn+%a+ r, 'aka kua%+$a#n!a #'ak+n $+(ak "a+k.

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2. SIMPANGAN RATA/

RATA*u'%a) n+%a+ 'u$%ak (ar+ #%+#+) #'uan+%a+ (nan n+%a+ ra$a/ra$a (+"a+(+"a+ (nan "an!akn!a (a$a.

n

X-XSR

=

f

X-XfSR

=

Data tidak berkelompok :

Data berkelompok :

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SIMPANGAN RATA/

RATA 1%an

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3. ARIANSIRa$a/ra$a kua(ra$ #%+#+) (ar+ #'ua n+%a+(a$a $r)a(ap n+%a+ ra$a/ra$a )+$un.

( ) ( )( )1-nn

X-XnSatau

1-n

X-XS

222

2

2 =

=

( ) ( )( )

fn

1-nn

fX-fXnSatau

1-f

X-XfS

22

2

2

2

=

=

=

Data tidak berkelompok :

Data berkelompok :

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4. STANDAR

DEIASIAkar panka$ (ua (ar+ ar+an#+.D+#"u$

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STANDAR DEIASI1%an

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STANDAR DEIASI

1%an

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STANDAR DEIASI

1%an

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EMIRINGAN DISTRI=USIDATADra

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-. RUMUS PEARSON( )

kanankemiringdatanyaditri!uimaka,03"

kirikemiringdatanyaditri!uimaka,02"imetridatanyaditri!uimaka0,1"

#$i%a

&ear'nkemiringandera(at

S

)ed-X3atau

S

)'d-X

>