Table 4 Summary statistics of customer service quality index
From: Customer service quality and benchmarking in public transport contracts
Operator | Mean | Standard deviation | Minimum | Maximum | Sample size |
|---|---|---|---|---|---|
1 | 0.5311 | 0.788 | -2.39 | 2.28 | 249 |
2 | 0.3900 | 0.894 | -1.87 | 2.00 | 96 |
3 | -.8178 | 1.248 | -4388 | 1.92 | 508 |
4 | -1.098 | 0.927 | -5.58 | 0.58 | 374 |
5 | -1.2840 | 1.406 | -5.46 | 0.84 | 196 |
6 | -.8377 | 0.383 | -.525 | 0.80 | 24 |
7 | -.9263 | 1.297 | -6.74 | 1.82 | 412 |
8 | -.7113 | 0.566 | -2.12 | 0.44 | 150 |
9 | -.4597 | 0.685 | -2.55 | 1.06 | 173 |
10 | -.5805 | 0.904 | -3.06 | 0.67 | 64 |
11 | -1.628 | 0.979 | -4.55 | 0.55 | 90 |
12 | -.3923 | 1.000 | -3.80 | 1.40 | 100 |
13 | 0.5435 | 0.483 | -.434 | 1.28 | 41 |
14 | 0.7636 | 0.940 | -2.28 | 2.61 | 180 |
15 | 0.2079 | 0.637 | -.638 | 0.692 | 9 |
16 | -.6345 | 0.958 | -4.00 | 1.03 | 159 |
17 | -.0649 | 1.089 | -2.86 | 2.09 | 190 |
18 | -.5687 | 1.206 | -3.24 | 1.04 | 27 |
19 | 1.0174 | 0.947 | -.990 | 2.70 | 203 |
20 | -.0444 | 0.639 | -1.43 | 1.55 | 224 |
21 | -.4212 | 0.852 | -3.45 | 1.17 | 227 |
22 | 0.6466 | 0.643 | -.600 | 2.01 | 46 |
23 | -.3076 | 1.034 | -4.28 | .808 | 65 |
24 | .1051 | 1.156 | -2.17 | 1.42 | 22 |
25 | -1.7579 | .875 | -3.01 | -.096 | 20 |
All | -.4067 | 1.224 | -6.74 | 2.70 | 3849 |