0.44 0.82 R a n c a n g a n P e r a n g k a t L u n a k a. A r s it e k tu r S is te m

t e r t i n g g i n y a a d a l a h + 3 . A l a s a n p e m b a t a s a n i n i a d a l a h k a r e n a d a l a m k o n d i s i a t a u d i s t r i b u s i n o r m a l d a t a y a n g l e b i h k e c i l d a r i - 3 a t a u l e b i h b e s a r d a r i + 3 j u m l a h n y a s a n g a t s e d i k i t . S u p a y a h a s i l C A T l e b i h m u d a h d i t e r i m a o le h b a n y a k p ih a k , k e m a m p u a n p e s e r t a t e s y a n g d a p a t b e r n i l a i p o s i t i f a t a u n e g a t i f t e r s e b u t k e m u d i a n d i u b a h m e n j a d i s k o r d e n g a n s k a l a t e r e n d a h 0 d a n t e r t i n g g i 1 0 0 . R u m u s y a n g d i g u n a k a n u n t u k m e m p e r o l e h k e m a m p u a n d a l a m s k o r d a l a m s k a l a t e r s e b u t a d a l a h s e b a g a i b e r i k u t . 5 0 Sk o r 1 0 0 = 5O + y 0 R u m u s t e r s e b u t a k a n m e n g h a s i l k a n S k o r 1 0 0 0 j i k a 0 -3 d a n a k a n m e n g h a s i l k a n S k o r 1 0 0 1 0 0 j i k a 0 3 . A g a r t i d a k a d a S k o r 1 0 0 0 a t a u S k o r 1 0 0 1 0 0 , m a k a p e r a n g k a t l u n a k y a n g d i k e m b a n g k a n h a r u s d a p a t m e m a k s a a t a u m e m b u l a t k a n S k o r 1 0 0 0 m e n j a d i 0 d a n S k o r 1 0 0 1 0 0 m e n j a d i 1 0 0 m e n g g u n a k a n l o g i k a p e m r o g r a m a n s e b a g a i b e r i k u t : Ji k a Sk o r 100 0, maka S kor 100 = 0 Ji k a Sk o r 100 100, maka Sko r 100 = 100 e. A n a lis is D a ta D a l a m p e n e l i t i a n i n i p e n g u j i a n k e b e n a r a n p r o g r a m d i l a k u k a n d e n g a n black- box testing. Black-box testing a d a l a h m e t o d e p e n g u j i a n f u n g s i o n a l i t a s p r o g r a m d e n g a n c a r a m e m b e r i k o n d i s i a t a u d a t a p a d a p r o g r a m u n t u k m e n g e t a h u i k e s e s u a i a n s p e s i f i k a s i p r o g r a m d e n g a n r a n c a n g a n . J i k a s p e s i f i k a s i p r o g r a m b e l u m s e s u a i d e n g a n y a n g d i h a r a p k a n k e m u d i a n d i l a k u k a n p e n y e s u a i a n - p e n y e s u a i a n s a m p a i p r o g r a m b i s a b e r j a l a n s e p e r t i y a n g d i h a r a p k a n . H a s il P e n e litia n d a n P e m b a h a s a n 1. H a s il S im u la s i C B T H a s i l s i m u l a s i C B T d a r i p e s e r t a t e s d i t u n j u k k a n d a l a m T a b e l 1 .K o l o m t e r a k h i r d a r i T a b e l 1 t e r s e b u t m e n u n j u k k a n b a h w a k e m a m p u a n p e s e r t a t e s p a d a C B T i n i k e m a m p u a n p e s e r t a t e s d i n y a t a k a n d e n g a n s k a l a 0 s a m p a i d e n g a n 1 0 0 b e r d a s a r k a n p e r s e n t a s e s o a l y a n g d i j a w a b d e n g a n b e n a r o l e h p e s e r t a t e s . S i m u l a s i i n i s e s u a i d e n g a n r a n c a n g a n y a n g t e l a h d i k e m u k a k a n s e b e l u m n y a . T a b e l 1. H a s i l C B T No. Kode Butir Daya Beda Tingkat Kesulitan Tebakan Skor Jawaban 0 Skala 100 1 11

1.67 0.7

0.15 28.571

2 50

0.75 0.03

0.88 1

3 43

0.69 0.44

0.52 4

62 1.28

0.38 0.05

5 22

0.92 0.2

0.97 6

59 1.58

1.04 0.44

1 7 18 1.55

1.69 0.82

10

2. H a sil S im u la si C A T

H a s i l s i m u l a s i C A T d a r i p e s e r t a t e s b e r k e m a m p u a n r e n d a h d i t u n j u k k a n d a l a m T a b e l 2 . H a s i l p e n g o l a h a n d a t a T a b e l 2 s e c a r a g r a f i k m e m p e r o l e h r i w a y a t h a s i l p e s e r t a t e s s e p e r t i d i t u n j u k k a n p a d a G a m b a r 5 . P a d a s i m u l a s i t e r s e b u t m u l a - m u l a p e s e r t a t e s d i a n g g a p m e m p u n y a i t i n g k a t k e m a m p u a n a w a l n y a 6 a w a l s e d a n g 0 a w a l = 0 d a n d i b e r i s o a l d e n g a n t i n g k a t k e s u l i t a n a w a l y a n g s e d a n g p u l a b a w a l = 0 . P e s e r t a t e s d i b e r i k e s e m p a t a n u n t u k m e n j a w a b s o a l d e n g a n a l o k a s i w a k t u t e r t e n t u . B e r d a s a r k a n j a w a b a n y a n g d i b e r i k a n p e s e r t a t e s , k e m u d i a n d i h i t u n g : k e m a m p u a n 0 p e s e r t a t e s s e t e l a h m e n j a w a b b u t i r s o a l , p r o b a b i l i t a s m e n j a w a b b e n a r b e r d a s a r k a n k e m a m p u a n t e r s e b u t P 0 , p r o b a b i l i t a s m e n j a w a b s a l a h Q 0 , f u n g s i i n f o r m a s i b u t i r £ 0 , k e s a l a h a n b a k u SE 6 , d a n h a r g a m u t l a k s e l i s i h k e s a l a h a n b a k u a n t a r p e n y a j i a n s o a l. K a r e n a j a w a b a n p e r t a n y a a n p e r t a m a s a l a h , y a i t u d i t a n d a i d e n g a n s k o r j a w a b a n = 0 , m a k a p a d a p u t a r a n k e d u a p e s e r t a d i b e r i s o a l y a n g l e b i h m u d a h , y a i t u d e n g a n t i n g k a t k e s u l i t a n - 0 ,4 5 . S o a l k e d u a i n i t e r n y a t a d a p a t d i j a w a b d e n g a n b e n a r . M e n g g u n a k a n r u m u s - r u m u s y a n g t e l a h d i k e m u k a k a n m a k a d a p a t d i h i t u n g k e m b a l i : k e m a m p u a n 0 p e s e r t a t e s s e t e l a h m e n j a w a b b u t i r s o a l , p r o b a b i l i t a s m e n j a w a b b e n a r b e r d a s a r k a n k e m a m p u a n t e r s e b u t P 0 , p r o b a b i l i t a s m e n j a w a b s a l a h Q 0 , f u n g s i i n f o r m a s i b u t i r £ 0 , k e s a l a h a n b a k u SE 6 , d a n h a r g a m u t l a k s e l i s i h k e s a l a h a n b a k u a n t a r p e n y a j i a n s o a l. T a b e l 2 . H a s i l S i m u l a s i C A T p a d a S i s w a B e r k e m a m p u a n R e n d a h N o . K o d e B u t i r D a y a B e d a T i n g k a t K e s u l i t a n T e b a k a n S k o r J a w a b a n e A w a l e S e t e l a h J a w a b P 6 Q0 - i - P 6 IIF SE 6 S e li s i h SE A n t a r I t e r a s i 1 93 0 .1 3 0 .3 0 .0 0 0 .0 0 0 .5 0 0 .5 0 0 .2 5 2 .0 0 2 .0 0 2 87 0 .61 - 0 . 4 5 0 .81 1 0 .0 0 - 0 . 4 5 0 .5 0 0 .5 0 0 .2 5 1.41 0 .5 9 3 6 0 .6 - 0 . 2 5 0 .1 3 - 0 . 4 5 - 0 . 4 5 0 .5 8 0 .4 2 0 .2 4 1 .16 0 .2 5 4 63 0 .9 1 - 0 . 0 5 0 .5 5 1 - 0 . 4 5 - 0 .0 5 0 .5 0 0 .5 0 0 .2 5 1 .00 0 .1 6 5 6 9 1.3 7 0 .1 5 0 .7 1 1 - 0 . 0 5 0 .1 5 0 .5 0 0 .5 0 0 .2 5 0 .9 0 0 .1 1 6 83 0 .9 5 0 .3 5 0.1 1 0 .1 5 0 .3 5 0 .5 0 0 .5 0 0 .2 5 0 .8 2 0 .0 8 7 88 1 .36 0 .5 5 0 .3 9 0 .3 5 0 .3 5 0 .5 8 0 .4 2 0 .2 4 0 .7 6 0 .0 6 8 7 6 1 .67 0 .7 5 0 .1 1 0 .3 5 0 .3 5 0 .6 6 0 .3 4 0 .2 2 0 .7 1 0 .0 4 9 86 1.7 9 0 .9 5 0 .2 6 0 .3 5 0 .3 5 0 .7 3 0 .2 7 0 .1 9 0 .6 8 0 .0 3 10 2 8 0 .4 9 1.15 0 .5 5 0 .3 5 0 .3 5 0 .8 0 0 .2 0 0 .1 6 0 .6 7 0 .0 1 P e n y a j i a n s o a l d a n p e r h i t u n g a n t e r s e b u t d i u l a n g - u l a n g s a m p a i a k h i r n y a stopping rule t e r c a p a i , y a i t u h a r g a a b s o l u t s e l i s i h S E a n t a r i t e r a s i s a n g a t k e c i l = 0 , 0 1 a t a u s o a l h a b i s . K e m a m p u a n a k h i r p e s e r t a t e s a d a l a h k e m a m p u a n t e r t i n g g i d a r i j a w a b a n s o a l y a n g b e n a r . H a s i l p e n g o l a h a n a n g k a d a r i T a b e l 2 s e c a r a g r a f i s d i t u n j u k k a n p a d a G a m b a r 5 . 11