Actividad 2 Análisis, mejora y control de los sistemas de calidad

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C5 5 151.40 6.66 (145.16, 157.64)

Pooled StDev = 6.68730

[pic 2]

Muestra algo de relación residual, sin embargo el valor de F se encuentra fuera de media, por lo tanto se rechaza la hipótesis nula.

Fisher Pairwise Comparisons

Grouping Information Using the Fisher LSD Method and 95% Confidence

Factor N Mean Grouping

C1 5 178.20 A

C2 5 166.40 B

C3 5 164.60 B

C4 5 158.00 B C

C5 5 151.40 C

Means that do not share a letter are significantly different.

[pic 3]

Pvalue menor a los niveles comunes de significancia por lo tanto se rechazará la hipótesis nula.

Tukey Pairwise Comparisons

Grouping Information Using the Tukey Method and 95% Confidence

Factor N Mean Grouping

C1 5 178.20 A

C2 5 166.40 A B

C3 5 164.60 B

C4 5 158.00 B C

C5 5 151.40 C

Means that do not share a letter are significantly diffcerent.

[pic 4]

Las medias que no comparten letra son significativamente diferentes.

Test for Equal Variances: C1, C2, C3, C4, C5

Method

Null hypothesis All variances are equal

Alternative hypothesis At least one variance is different

Significance level α = 0.05

95% Bonferroni Confidence Intervals for Standard Deviations

Sample N StDev CI

C1 5 3.96232 (1.49235, 21.6988)

C2 5 7.36885 (2.82365, 39.6639)

C3 5 5.27257 (1.90928, 30.0318)

C4 5 9.02774 (2.05447, 81.8208)

C5 5 6.65582 (2.04230, 44.7395)

Individual confidence level = 99%

Tests

Test

Method Statistic P-Value

Multiple comparisons — 0.561

Levene 0.48 0.748

[pic 5]

Pvalues e intervalos de comparación indican que no son estadísticamente significativas las diferencias entre los grupos, debido a que los datos son mayores a 0.5 la hipótesis nula es aceptada

One-way ANOVA: Time1, Time2, Time3, X1, X2, X3

Method

Null hypothesis All means are equal

Alternative hypothesis At least one mean is different

Significance level α = 0.05

Equal variances were assumed for the analysis.

Factor Information

Factor Levels Values

Factor 6 Time1, Time2, Time3, X1, X2, X3

Analysis of Variance

Source DF Adj SS Adj MS F-Value P-Value

Factor 5 2724 544.87 53.09 0.000

Error 234 2401 10.26

Total 239 5126

Model Summary

S R-sq R-sq(adj) R-sq(pred)

3.20352 53.15% 52.15% 50.72%

Means

Factor N Mean StDev 95% CI

Time1 40 9.352 2.981 (8.354, 10.350)

Time2 40 1.447 1.412 (0.449, 2.445)

Time3 40 7.455 4.461 (6.457, 8.453)

X1 40 9.352 2.981 (8.354, 10.350)

X2 40 1.447 1.412 (0.449, 2.445)

X3 40 7.455 4.461 (6.457, 8.453)

Pooled StDev = 3.20352

Tukey Pairwise Comparisons

Grouping Information Using the Tukey Method and 95% Confidence

Factor N Mean Grouping

X1 40 9.352 A

Time1 40 9.352 A

X3 40 7.455 A

Time3 40 7.455 A

X2 40 1.447 B

Time2 40 1.447 B

Means that do not share a letter are significantly different.

Tukey Simultaneous 95% CIs

Fisher Pairwise Comparisons

Grouping Information Using the Fisher LSD Method and 95% Confidence

Factor N Mean Grouping

X1 40 9.352 A

Time1 40 9.352 A

X3 40 7.455 B

Time3 40 7.455 B

X2 40 1.447 C

Time2 40 1.447 C

Means that do not share