Riset 2015 - Uji Validitas & Reliabilitas
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Transcript of Riset 2015 - Uji Validitas & Reliabilitas
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Oleh : Nur Aini, S.Kep.Ns.,M.Kep
UJI VALIDITAS & RELIABILITAS
RISET KEPERAATAN
PRODI S! KEPERAATAN "IKES UMM
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VALIDITAS
A#l su$%u uur$n '( )enun*u$n %in($%+e$li#$n-es$hih$n su$%u ins%ru)en.
U% )n#$p$%$n ins%ru)en '( $li#,peneli%i hrs er%in#$ h$%i+ se*$ $/$lpen'usun$nn'$ 0'$ni )e)e1$h $ri$el)en*$#i su $ri$el & in#i$%2r e)u#i$n$ru )e)u$% u%ir+ per%$n'$$n3.
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42n%5Du$ h$l '$n( h$rus #ipenuhi :
$. Rele$n isi ins%ru)enIsi ins%ru)en h$rus sesu$i #(n %u*u$n
peneli%i$n
Isi #$p$% #i*$$r$n #$l$) #e6nisi
2per$si2n$l
. Rele$n 1$r$ pen(uur$n &s$s$r$n ins%ru)en
Ins%ru)en '( #isusun h$rus)e)eri$n ($)$r$n su'epeneli%i$n
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K$n#un($n isi u%ir7u%ir i%e)per%$n'$$n '( #iu$% sesu$i #en($n%2pi peneli%i$n & is$ )en(($li
*$/$$n resp2n#en sesu$i #(nper)$s$l$h$n '( #iru)us$n 2lehpeneli%i.
V$li#i%$s isi 012n%en%3
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V$li#i%$s isi :
$. $li#i%$s )u$$#l %ipe $li#i%$s '( p$lin( ren#$hsi(ni6$nsin'$ rn h$n'$ #i#$s$r$n p#82r)$% pen$)pil$n %es.
. $li#i%$s l2(i 0s$)plin( $li#i%'3
se*$uh)$n$ isi %es )erup$$n represen%$si
#$ri 1iri+ $%riu% '( hen#$ #iuur.
U% )e)per2leh $li#i%$s ini '( %in((i, %eshrs #ir$n1$n( se#e)ii$n rup$ sh( en$r+erisi h$n'$ $i%e) '( rele$n & perlu)en*$#i $(i$n %es se1$r$ eseluruh$n.
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Men(($)$r$n seer$p$ *$uhins%ru)en )e)ilii i%e)+ per%$n'$$n'( #il$n#$si 2leh 2ns%ru %%%.
Ins%ru)en '( )e)ilii $li#i%$s2ns%ru )$)pu )e)e#$$nnil$i-h$sil pen(uur$n $n%$r$ in#ii#u'( 1 #(n '( l$in. Mis : ins%ru)enu$li%$s hi#up 0)$)pu )e)e#$$n
in#ii#u '( )e)ilii u$li%$s hi#up $i& %#3
V$li#i%$s en%u
012ns%ru1%3
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Di$(i )en*$#i + '$i%u : $li#i%$spre#i%i8 & $li#i%$s 2nuren.
$.V$li#i%$s pre#i%i8 7 $#l e%ep$%$n su$%u ins%ru)en)en(h$sil$n #$%$ '( )$)pu)e)pre#isi e*$#i$n #i )$s$ '($$n #$%$n(.7 er8un(si s( pre#i%2r $(i
per82r)$nsi #i /$%u '( $$n #$%$n(.
V$li#i%$s er#$s$rri%eri$
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. V$li#i%$s 2nuren
$li#$si $l$% uur #(n)e)$n#in($nn'$ #(n $l$% uur l$in'( su#$h %eru%i $li#.
)is : $p$il$ i%$ )en'usun su$%us$l$ self concept '( $ru, )$$ u%)en(u*i $li#i%$s s$l$ %s i%$ #p%
)en((un$$n s$l$ self concept l$in'( %el$h %eru*i $li#i%$sn'$.
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4$r$ 1 : ru)us K2rel$si pr2#u1% )2)en%
dengan rxy merupakan koefisien korelasi antara variabel X dan variabelY, N merupakan jumlah siswa uji coba, X adalah skor-skor tiap butir
soal untuk setiap individu, dan Y adalah skor total setiap individu.
Selanjutnya r hitung dibandingkan dgn r tabel.
Bila r hit r tab, maka data!instrumen tsb valid.
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42n%2h :
N2.
resp
s2r */n-u%ir T2%$l
! + ; < =
! ! ; + ! ; !>
+ + ; ; + ; !;
; < ! = = = +>
< < = < + + !?
= < ! ; = = !@
J)l 03 != !; !? != !@ ?@
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S2$l e7!
N2.resp
s2r */n-u%ir T2%$l03
+ C.S2$l ! -
#iseu% C C+
! ! ! !> !>> !>
+ + < !; ! +
; < ! +> > @>
< < ! !? +@ @
= < ! !@ ;+< ?+
∑ C F !=∑ 0C3+ F ++=
∑ C+ F =;
∑ F ?@∑ 03+ F
>@<
∑ + F!+@+
∑ CF+=
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" # $%#&' ( $)#' $*+'
$ #. #- ( %%#' $#. )%+%&/+0' " )%+/))*/
$0/' $-%&'
" ))/ ))0,% " /,1&
2ilai r hitung utk soalke) adl /,1& r tab$/,+*+'. Artinya soal) adl valid
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4$r$ + : #(n )i1r2s28% e1el 0α = 0,05 dann=5)
cara 3 tulis data pada e4cel. 5emudian pd kolom B+ ketikkan6ormula 7"correl $B-3B*, G-3G*', pd kolom 8 maka "correl$8-38*, G-3G*' dst9 kemudian :2;:R.5emudian akan keluar hasil spt diatas $/,1& dst'.
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$sil pen(hi%un($n :
No Nilai rhitung r tabel keterangan
! >, Nil$i r %$el#(n α = 0,05dan df
(n=5) adalah0,878
V$li#
+ 7>, Ti#$ $li#
; >,@ Ti#$ $li#
< >,@ Ti#$ $li#
= >,= Ti#$ $li#
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4$r$ ; : #(n SPSS
l$n($h7l$n($h :!.Bu$ SPSS,
e%i$n #$%$ p$#$
#$%$ ie/.
+.Kli )enu An$l'Ge,42rrel$%e, Bi$ri$%e
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-.
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Un%u )en(e%$hui s2$l $li# $%$u %i#$#i$n#in($n #en($n r7 %$el pr2#u1%
)2)en%.
A%$u is$ $1$ nil$i si(ni6$nsi #$n$n#in($n #(n α0)is >,>=3. p# %$el
h$sil nil$i si(ni6$nsi $#l :
S2$l ! >,>>@ H α (0,05) : valid
S2$l + >,=>= α (0,05) : tdk valid
S2$l ; >,>; α (0,05) : tdk valid
S2$l < >,>! α (0,05) : tdk valid
S2$l = >,;+; α (0,05) : tdk valid
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RELIABILITAS
Men(uur ins%ru)en #$l$)e%ep$%$n 02nsis%ensi3 #$ne$n#$l$n.
Reli$el $r%in'$ #p%#iper1$'$, #p% #i$n#$l$n.
Se*$uh )$n$ pen(uur$n #$risu$%u u*i 12$ '$n( #il$u$n%e%$p )e)ilii h$sil '$n(s$)$ )esipun #il$u$n
se1$r$ erul$n(7ul$n(%erh$#$p su'e #$n #$l$)2n#isi '( s$)$.
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Prinsip Reliabilitas
!. S%$ili%$s)e)pun'$i es$)$$n il$ #il$u$n
erul$n( ul$n( #$l$) /$%u '$n( ere#$
+. Eui$lenpen(uur$n )e)eri$n h$sil '$n( s$)$
p$#$ e*$#i$n '$n( s$)$
;. 2)2(enins%ru)en '$n( #iper(un$$n h$rus
)e)pun'$i isi '$n( s$)$
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!. Reli$ili%$s es%ern$l
$. Teni p$r$rel
peneli%i )en'usun + ins%ru)en,e)u#i$n #iu*i$n e resp2n#en0resp2n#en )en(er*$$n + 3e)u#i$n h$siln'$ #i2rel$si$n.
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. Teni ul$n(
su$%u ins%ru)en '$n( #iu*i12$$nep$#$ el2)p2 A 0)is$ln'$3,e)u#i$n #ihi%un( s2r7s2rn'$.
Se%el$h i%u #$l$) /$%u sel$n(
%er%en%u 0i#e$ln'$ + )((3, ins%ru)en'( s$)$ #iu*i12$$n l$(i ep$#$el2)p2 A '( s$)$ pul$ & #ihi%un(s2r7s2rn'$.
Ke)u#i$n e#u$ s2r '$n( #ihi%un(%$#i #i2rel$si$n.
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+. Reli$ili%$s in%ern$l
Reli$ili%$s in%ern$l #iper2leh #(n 1$r$)en($n$lisis #$%$ #$ri ! $li h$silpen(e%es$n.
#en($n u*i 2rel$si $n%$r i%e)
per%$n'$$n '$n( )e)en%u seu$h2nsep.
4$r$ : !3 ru)us spe$r)$n7r2/n-el$h #u$, +3 ru)us $n$($n,
;3 ru)us rul2n, , =3 ru)us K7R +!, 3ru)us '2%, ?3 ru)us 1r2n$1h $lph$.
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Spearmanbro!n
#ien$l #en($n is%il$h : %eni el$h #u$ 0split halftechnique3.
#$l$) penen%u$n re$ili%$s %es, pen($n$lisis$nn'$#il$u$n #en($n *$l$n )e)el$h #u$ u%ir7u%irs2$l %es )en*$#i #u$ $(i$n '$n( s$)$.
Spe$r)$n7Br2/n )e)peren$l$n #u$ u$h )2#el,'$i%u : Model Gasal- Genap dan Model Kiri-Kanan.
S'$r$% : 7 #$%$ '$n( #i(un$$n )erup$$n ins%ru)en#en($n s2r ! #$n >. *u)l$h u%ir per%$n'$$n (en$p
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Rumus "anaganRumus Rulon
S'$r$% : 7 #$%$ '$n( #i(un$$n )erup$$nins%ru)en #en($n s2r ! #$n >. *u)l$hu%ir per%$n'$$n (en$p
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Rumus #ronba$h Alpha
Di(un$$n un%u )en1$ri reli$ili%$sins%ru)en '$n( s2rn'$ u$n ! #$n >.
Di(un$$n un%u s$l$ lier% 0se%u*u, %i#$se%u*u #s%3
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U*i reli$ili%$s #(n 4r2n$1hAlph$
Ru)us :
r!! F 0 3 0 ! 7 ∑σ b2 )
(k – 1) σt2
Ket :
r!! F reli$ili%$s ins%ru)en
K F $n'$n'$ s2$l
∑σ b2 = jml vaian! b"ti
σt2 = vaian! t#tal
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Sl) )en1$ri $ri$ns u%ir, i%$ )en1$ri #ulu$ri$ns se%i$p u%ir-$ri$ns )$sin(+ s2$l.
σ(1)2 = 5$% 152 = 5$ % &5 = 1,'
σ(2)2
= &$ – 1$2
= &$ – $$,8 = 1,8&
σ($)2 = '$ % 172 = '$ – 57,8 = 1,0&
σ(&)2 = 5 – 152 = 5 – &5 = 2,8
##
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5et 3Pembagi #,krn jmlsampel!responden #orang.
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σ(5)2 = 72 % 182 = 72 – '&,8 = 1,&&
∑σ b2 = 1,' 1,8& 1,0& 2,8 1,&& = 8,72
*aian! t#tal = 1282 – 782 = 1282%121',8 = 1$,0&
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Ke)u#i$n #i)$su$n e ru)us $lph$ :
r!! F 0 3 0 ! 7 ∑σ b2 )
(k – 1) σt2
= ( 5 ) + (1 – 8,72)
(5–1) 1$,0&
= (5&)+ (1%0,'')
= 0,&25
5es 3 r hitung $/,0%#' @ /,&/. artinya reliabilitas datamasih rendah.
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>=-!@-!IKD I
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