Understanding the Operational Efficiency of Bicycle-Sharing Based on the Influencing Factor Analyses: A Case Study in Nanjing, China

Table 6

The number of randomly selected variables (k) and the goodness of fit (R2) of regression.

k	20	25	30	35	40	45
of inflow model	0.210	0.240	0.265	0.285	0.303	0.318
of outflow model	0.204	0.232	0.256	0.276	0.292	0.306