————— 5/5/2010 1:36:15 PM ————————————————————
Paired T-Test and CI: SNEWS (dalam kelvin), SN1604 (dalam celcius)
Paired T for SNEWS (dalam kelvin) - SN1604 (dalam celcius)
N Mean StDev SE Mean
SNEWS (dalam 5 15294634 173719 77690
SN1604 (dala 5 15284058 173495 77589
Difference 5 10577 24250 10845
95% CI for mean difference: (-19535, 40688)
T-Test of mean difference = 0 (vs not = 0): T-Value = 0.98 P-Value = 0.385
Kesimpulan: karena nilai P(0.385) lbih besar dari nilai alfa(0.05), maka tidak beda nyata, yaitu Ho diterima
Regression Analysis: Absorbansi versus Konsentrasi
The regression equation is
Absorbansi = - 0.0037 + 0.187 Konsentrasi
Predictor Coef SE Coef T P
Constant -0.00370 0.01795 -0.21 0.847
Konsentr 0.186898 0.007064 26.46 0.000
S = 0.02518 R-Sq = 99.4% R-Sq(adj) = 99.3%
Analysis of Variance
Source DF SS MS F P
Regression 1 0.44391 0.44391 700.02 0.000
Residual Error 4 0.00254 0.00063
Total 5 0.44645
Macro is running ... please wait
Regression Analysis: Absorbansi versus Konsentrasi
The regression equation is
Absorbansi = -0.0037049 + 0.186898 Konsentrasi
S = 0.0251822 R-Sq = 99.4 % R-Sq(adj) = 99.3 %
Analysis of Variance
Source DF SS MS F P
Regression 1 0.443915 0.443915 700.022 0.000
Error 4 0.002537 0.000634
Total 5 0.446451
Fitted Line Plot: Absorbansi versus Konsentrasi
Correlations: Konsentrasi, Absorbansi
Pearson correlation of Konsentrasi and Absorbansi = 0.997
P-Value = 0.000
Kesimpulan: semakin besar nilai konsentrasi, maka semakin besar nilai absorbansinya. jika konsentrasi 1.4, maka absorbansi =- 0.0037049 + 0.186898 * 1.4 = 0.257952 jika konsentrasi 4.5, maka absorbansi =- 0.0037049 + 0.186898 * 4.5 = 0.837336
Results for: Worksheet 3
One-way ANOVA: kadar versus perlakuan
Analysis of Variance for kadar
Source DF SS MS F P
perlakua 2 666.9 333.5 15.02 0.000
Error 15 333.0 22.2
Total 17 999.9
Individual 95% CIs For Mean
Based on Pooled StDev
Level N Mean StDev ---+---------+---------+---------+---
1 6 44.873 6.336 (-----*-----)
2 6 30.603 5.051 (-----*-----)
3 6 33.995 0.966 (-----*----)
---+---------+---------+---------+---
Pooled StDev = 4.712 28.0 35.0 42.0 49.0
a) karena nilai P(0.000) lebih kecil dari nilai alfa (0.05), maka beda nyata b) One-way ANOVA: kadar versus perlakuan Analysis of Variance for kadar Source DF SS MS F P perlakua 2 666.9 333.5 15.02 0.000 Error 15 333.0 22.2 Total 17 999.9 Individual 95% CIs For Mean Based on Pooled StDev Level N Mean StDev ---+---------+---------+---------+--- 1 6 44.873 6.336 (-----*-----) 2 6 30.603 5.051 (-----*-----) 3 6 33.995 0.966 (-----*----) ---+---------+---------+---------+--- Pooled StDev = 4.712 28.0 35.0 42.0 49.0 Dunnett's comparisons with a control Family error rate = 0.0750 Individual error rate = 0.0419 Critical value = 2.22 Control = level (1) of perlakua Intervals for treatment mean minus control mean Level Lower Center Upper -+---------+---------+---------+------ 2 -20.319 -14.270 -8.221 (-----------*------------) 3 -16.928 -10.878 -4.829 (-----------*-----------) -+---------+---------+---------+------ -20.0 -15.0 -10.0 -5.0 Fisher's pairwise comparisons Family error rate = 0.169 Individual error rate = 0.0750 Critical value = 1.913 Intervals for (column level mean) - (row level mean) 1 2 2 9.066 19.474 3 5.674 -8.596 16.082 1.812 c) karena nilai P(0.000) lebih kecil dari nilai alfa, maka dilakukan uji lanjutan
