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please explain thoroughly the Test of Homogeneity of Variances and Why Post Hoc Tukey HSD is the appropriate model. thanks

please explain thoroughly the Test of Homogeneity of Variances and Why Post Hoc Tukey HSD is the appropriate model. thanks

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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please explain thoroughly the Test of Homogeneity of Variances and Why Post Hoc Tukey HSD is the appropriate model. thanks

Oneway X18 - Delivery Speed Less than 1 year 1 to 5 years Over 5 years Total Test of Homogeneity of Variances X18 - Delivery Speed Levene Statistic X18 - Delivery Speed Between Groups Within Groups Total Post Hoc N Mean Std. Deviation Std. Error 323.172| .6150 .1087 35 4.243 .5731 .0969 33 4.200 .4500 .0783 100 3.886 .7344 .0734| .866 df1df2 Sig. 2 97 424 Games- Howell Dependent Variable:X18 - Delivery Speed Sum of Squares df Mean Square F Sig. 24.030 2 12.015 39.681.000 .303 29.370 97 53.400 99 (1) X1 Customer Type Tukey HSD Less than 1 year ANOVA 1 to 5 years (J) X1 - Customer Type 1 to 5 years Over 5 years Less than 1 year Over 5 years Less than 1 year 1 to 5 years 1 to 5 years Over 5 years Less than 1 year Over 5 years Less than 1 year 1 to 5 years *. The mean difference is significant at the 0.05 level. Homogeneous Over 5 years Less than 1 year 1 to 5 years Descriptives Over 5 years 95% Confidence Interval for Mean Lower Bound X18 - Delivery Speed Multiple Comparisons Subset for alpha = 0.05 1 2 3.172 2.950 4.046 4.040 3.740 Mean Difference (I-J) X1 - Customer Type N Tukey HSDa Less than 1 year 32 Over 5 years 33 1 to 5 years 35 Sig. 1.000 Means for groups in homogeneous subsets are displayed. a. Uses Harmonic Mean Sample Size = 33.287. 4.200 4.243 .946 Upper Bound Minimum Maximum 3.394 4.440 4.360 4.032 Std. Error Sig. .1346.000 .1365.000 -1.0710* -1.0281* 1.0710 .0429 1346.000 1335.945 1.0281* .1365.000 -.0429 1335.945 -1.0710* .1456.000 -1.0281* 1340.000 1.0710* .1456.000 .0429 .1246.937 1.0281* .1340.000 -.0429 .1246.937 1.6 3.0 3.3 1.6 95% Confidence Interval Lower Bound -1.391 -1.353 .751 -.275 .703 -.361 -1.420 -1.351 4.4 5.5 4.9 5.5 .722 -.256 .706 -.342 Upper Bound -.751 -.703 1.391 .361 1.353 .275 -.722 -.706 1.420 .342 1.351 .256
Transcribed Image Text:Oneway X18 - Delivery Speed Less than 1 year 1 to 5 years Over 5 years Total Test of Homogeneity of Variances X18 - Delivery Speed Levene Statistic X18 - Delivery Speed Between Groups Within Groups Total Post Hoc N Mean Std. Deviation Std. Error 323.172| .6150 .1087 35 4.243 .5731 .0969 33 4.200 .4500 .0783 100 3.886 .7344 .0734| .866 df1df2 Sig. 2 97 424 Games- Howell Dependent Variable:X18 - Delivery Speed Sum of Squares df Mean Square F Sig. 24.030 2 12.015 39.681.000 .303 29.370 97 53.400 99 (1) X1 Customer Type Tukey HSD Less than 1 year ANOVA 1 to 5 years (J) X1 - Customer Type 1 to 5 years Over 5 years Less than 1 year Over 5 years Less than 1 year 1 to 5 years 1 to 5 years Over 5 years Less than 1 year Over 5 years Less than 1 year 1 to 5 years *. The mean difference is significant at the 0.05 level. Homogeneous Over 5 years Less than 1 year 1 to 5 years Descriptives Over 5 years 95% Confidence Interval for Mean Lower Bound X18 - Delivery Speed Multiple Comparisons Subset for alpha = 0.05 1 2 3.172 2.950 4.046 4.040 3.740 Mean Difference (I-J) X1 - Customer Type N Tukey HSDa Less than 1 year 32 Over 5 years 33 1 to 5 years 35 Sig. 1.000 Means for groups in homogeneous subsets are displayed. a. Uses Harmonic Mean Sample Size = 33.287. 4.200 4.243 .946 Upper Bound Minimum Maximum 3.394 4.440 4.360 4.032 Std. Error Sig. .1346.000 .1365.000 -1.0710* -1.0281* 1.0710 .0429 1346.000 1335.945 1.0281* .1365.000 -.0429 1335.945 -1.0710* .1456.000 -1.0281* 1340.000 1.0710* .1456.000 .0429 .1246.937 1.0281* .1340.000 -.0429 .1246.937 1.6 3.0 3.3 1.6 95% Confidence Interval Lower Bound -1.391 -1.353 .751 -.275 .703 -.361 -1.420 -1.351 4.4 5.5 4.9 5.5 .722 -.256 .706 -.342 Upper Bound -.751 -.703 1.391 .361 1.353 .275 -.722 -.706 1.420 .342 1.351 .256
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