Table 4. Reliability and validity analysis of gas data in Case Study 1.
| Descriptive Statistics | Communalities | Cronbach’s Alpha | Validity Analysis | ||||||
| Mean | Std. Deviation | Analysis N | Initial | Extraction | Kaiser-Meyer-Olkin Measure of Sampling Adequacy. | .823 | |||
| T030802 | .3084 | .03641 | 7265 | 1.000 | .884 | .968 | |||
| T030803 | .3688 | .03886 | 7265 | 1.000 | .912 | Bartlett’s Test of Sphericity | Approx. Chi-Square | 51040.029 | |
| T030804 | .3641 | .03838 | 7265 | 1.000 | .968 | df | 6 | ||
| Sig. | .000 | ||||||||
| T030805 | .2792 | .02730 | 7265 | 1.000 | .956 | Average Communality | .957 | ||
| Anti-image Correlations | >0.5 | ||||||||