Fig. 3: Users experience rankings and problem categorization results for public EV charging stations.
From: Equity and reliability of public electric vehicle charging stations in the United States
a Non-disadvantaged communities (non-DAC) and rural areas exhibit significantly higher average rankings of positive user experience, as compared to disadvantaged communities (DAC) and urban areas (***p < 0.001; exact p-values: 2.7 × 10−7 for the comparison between DAC and non-DAC areas, and 0.00051 for the comparison between urban and rural areas). User experience is ranked by sentiment scores, which are derived from each user review. Statistical significance was evaluated using the T-test (two-sided). The error bars indicate 95% confidence intervals. b Distribution of different categories of problems encountered by public EVCS users.
