THE USE... R. Arief Nugroho Mater’s Program in Linguistics, Diponegoro University
©2009, UNDIP Institutional Repository
12, 93. It can be seen that there only 3, 93
x
1
improvement compared to experimental
group’s 10, 00
x
1
.
3. T-test Data of Post-Test and Pre-Test of Control Group
Hypothes is
Ho :
1
2
Ha :
1
2
Formula
To measure the hypothesis, the researcher uses the formula below :
Where : Mx
= SX
= 222
= 14.8
My =
SY =
135 =
9 Nx
15 Ny
15 Sx
2
= SX
2
- SX
2
Sy
2
= SY
2
- Sy
2
Nx Nx
= 3680
- 222
= 1355
- 135
15 15
= 3680
- 3285.6
= 1355
- 1215
2 2
N +
N
-
N +
N S
+ S
- =
y x
Y X
2 2
Y X
1 1
2 x
M M
t
1
y
THE USE... R. Arief Nugroho Mater’s Program in Linguistics, Diponegoro University
©2009, UNDIP Institutional Repository =
394.4 =
140
t =
14.80 9.00
394.40 +
140.00 1
+ 1
15 +
15 - 2 15
15 =
5.80 534.4
2 28
15
= 5.80
2.54476 =
5.80 1.6
= 3.63584
On - 2 = 84 the result
t
0.9584
=
2.05
- 2.05
2.05 3.64
Because t estimation is not in the Ho area, so we can conclude that there was
Ho acceptance area
THE USE... R. Arief Nugroho Mater’s Program in Linguistics, Diponegoro University
©2009, UNDIP Institutional Repository
significant difference between post-test and pre-test.
4. T-test Data of Post-Test and Pre-Test Experimental Group
Hypothes is
Ho :
1
2
Ha :
1
2
Formula
To measure the hypothesis, the researcher used the formula below :
Where : Mx
= SX
= 306
= 20.4
My =
SY =
160 = 10.6667
Nx 15
Ny 15
Sx
2
= SX
2
- SX
2
Sy
2
= SY
2
- Sy
2
Nx Nx
= 6366
- 306
= 1804
- 160
15 15
= 6366
- 6242.4
= 1804
- 1706.67
2 2
N +
N
-
N +
N S
+ S
- =
y x
Y X
2 2
Y X
1 1
2 x
M M
t
1
y
THE USE... R. Arief Nugroho Mater’s Program in Linguistics, Diponegoro University
©2009, UNDIP Institutional Repository =
123.6 = 97.3333
t =
20.40 10.67
123.60 +
97.33 1
+ 1
15 +
15 - 2 15
15 =
9.73 220.9
2 28
15
= 9.73
1.05206
= 9.73
1.03 =
9.48944
On = 5 with dk = 43 + 43 - 2 = 84 the result t
0.9584
= 2.05
- 2.05
2.05 9.49
Because t estimation is not in the Ho area, so we can conclude that there was a significant difference between post-test and pre-test.
Ho
Acceptance Area
THE USE... R. Arief Nugroho Mater’s Program in Linguistics, Diponegoro University
©2009, UNDIP Institutional Repository
5. Post-Test Results Comparison between Experimental Group and Control Group
