Senin, 03 Mei 2010

UAS KOMDAT 2010/2011

SARAH / 095633

no.1





















2. Two-Sample T-Test and CI: Tomat, Mentimun

Two-sample T for Tomat vs Mentimun


N Mean StDev SE Mean

Tomat 7 772.6 13.6 5.1

Mentimun 7 780.9 10.4 3.9


Difference = mu Tomat - mu Mentimun

Estimate for difference: -8.29

95% CI for difference: (-22.51, 5.94)

T-Test of difference = 0 (vs not =): T-Value = -1.28 P-Value = 0.226 DF = 11


kesimpulan :

Statistik p = 0.226. Nilai statistik P dibandingkan dengan alpha = 0.05. P>alpha, maka

perolehan bromida dalam kedua sayuran tersebut tidak berbeda nyata.





3. Correlations: Emas yang ditambahkan, Absorbans



Pearson correlation of Emas yang ditambahkan and Absorbans = 1.000

P-Value = 0.000


Kesimpulan :

Korelasi emas yang ditambahkan dengan absorbans = 1.000, hal ini menyatakan bahwa mempunyai hubungan yang erat positif.


Regression Analysis: Absorbans versus Emas yang ditambahkan



The regression equation is

Absorbans = 0.257 + 0.00535 Emas yang ditambahkan


Predictor Coef SE Coef T P

Constant 0.256917 0.002384 107.75 0.000

Emas yan 0.00534881 0.00005700 93.84 0.000


S = 0.003694 R-Sq = 99.9% R-Sq(adj) = 99.9%


Analysis of Variance


Source DF SS MS F P

Regression 1 0.12016 0.12016 8806.33 0.000

Residual Error 6 0.00008 0.00001

Total 7 0.12024




Macro is running ... please wait


Regression Analysis: Emas yang di versus Absorbans



The regression equation is

Emas yang di = -47.9760 + 186.830 Absorbans

S = 0.690366 R-Sq = 99.9 % R-Sq(adj) = 99.9 %


Analysis of Variance


Source DF SS MS F P

Regression 1 4197.14 4197.14 8806.33 0.000

Error 6 2.86 0.48

Total 7 4200.00



Fitted Line Plot: Emas yang di versus Absorbans




Descriptive Statistics: Tomat, Mentimun



Variable N Mean Median TrMean StDev SE Mean

Tomat 7 772.57 770.00 772.57 13.56 5.13

Mentimun 7 780.86 782.00 780.86 10.42 3.94


Variable Minimum Maximum Q1 Q3

Tomat 758.00 790.00 759.00 790.00

Mentimun 765.00 797.00 773.00 789.00


4. a)

One-way ANOVA: ulanagan, cara


Analysis of Variance

Source DF SS MS F P

Factor 1 1105.005 1105.005 1615.15 0.000

Error 22 15.051 0.684

Total 23 1120.056

Individual 95% CIs For Mean

Based on Pooled StDev

Level N Mean StDev -----+---------+---------+---------+-

ulanagan 12 2.500 1.168 (*)

cara 12 16.071 0.068 (*)

-----+---------+---------+---------+-

Pooled StDev = 0.827 4.0 8.0 12.0 16.0


Kesimpulan :

ketiga cara tersebut berbeda nyata.






b.) One-way ANOVA: cara versus ulanagan


Analysis of Variance for cara

Source DF SS MS F P

ulanagan 3 0.01109 0.00370 0.74 0.559

Error 8 0.04020 0.00502

Total 11 0.05129

Individual 95% CIs For Mean

Based on Pooled StDev

Level N Mean StDev ---------+---------+---------+-------

1 3 16.0833 0.0503 (----------*-----------)

2 3 16.1100 0.0529 (-----------*-----------)

3 3 16.0267 0.0902 (----------*-----------)

4 3 16.0633 0.0814 (-----------*-----------)

---------+---------+---------+-------

Pooled StDev = 0.0709 16.000 16.080 16.160


Dunnett's comparisons with a control


Family error rate = 0.0500

Individual error rate = 0.0205


Critical value = 2.88


Control = level (1) of ulanagan


Intervals for treatment mean minus control mean


Level Lower Center Upper ---------+---------+---------+--------

2 -0.14001 0.02667 0.19334 (-------------*-------------)

3 -0.22334 -0.05667 0.11001 (-------------*-------------)

4 -0.18668 -0.02000 0.14668 (-------------*-------------)

---------+---------+---------+--------

-0.12 0.00 0.12


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Tukey's pairwise comparisons


Family error rate = 0.0500

Individual error rate = 0.0126


Critical value = 4.53


Intervals for (column level mean) - (row level mean)


1 2 3


2 -0.21206

0.15873


3 -0.12873 -0.10206

0.24206 0.26873


4 -0.16540 -0.13873 -0.22206

0.20540 0.23206 0.14873


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Fisher's pairwise comparisons


Family error rate = 0.176

Individual error rate = 0.0500


Critical value = 2.306






Intervals for (column level mean) - (row level mean)


1 2 3


2 -0.16014

0.10680


3 -0.07680 -0.05014

0.19014 0.21680


4 -0.11347 -0.08680 -0.17014

0.15347 0.18014 0.09680



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