Table 7. Reliability and validity analysis of gas data in Case Study 2.
| Descriptive Statistics | Communalities | Cronbach’s Alpha | Validity Analysis | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean | Std. Deviation | Analysis N | Initial | Extraction | |||||
| T010103 | .2569 | .01382 | 9430 | 1.000 | .326 | .895 | Kaiser-Meyer-Olkin Measure of Sampling Adequacy | .904 | |
| T010104 | .0779 | .00606 | 9430 | 1.000 | .859 | ||||
| T010105 | .0262 | .00635 | 9430 | 1.000 | .749 | ||||
| T010106 | .0384 | .00567 | 9430 | 1.000 | .842 | ||||
| T010201 | .0542 | .01011 | 9430 | 1.000 | .784 | ||||
| T010202 | .0518 | .00900 | 9430 | 1.000 | .748 | Bartlett’s Test of Sphericity | Approx. Chi-Square | 114286.447 | |
| T010203 | .1709 | .01419 | 9430 | 1.000 | .613 | ||||
| T010205 | .1526 | .00809 | 9430 | 1.000 | .768 | ||||
| T010303 | .1147 | .00716 | 9430 | 1.000 | .605 | df | 120 | ||
| T010304 | .1769 | .01827 | 9430 | 1.000 | .690 | ||||
| T010305 | .3839 | .01730 | 9430 | 1.000 | .851 | Sig. | .000 | ||
| T010306 | .2739 | .01210 | 9430 | 1.000 | .667 | ||||
| T010307 | .3170 | .01568 | 9430 | 1.000 | .660 | Average Communality | .701 | ||
| T010308 | .2977 | .02124 | 9430 | 1.000 | .800 | ||||
| T010401 | .3824 | .01299 | 9430 | 1.000 | .580 | Anti-image Correlations | > 0.5 | ||
| T010501 | .0307 | .00604 | 9430 | 1.000 | .677 | ||||