In the context of the bus scenario, what does high variance indicate?

High variance in the context of the bus scenario indicates inconsistency in travel times. When travel times exhibit high variance, it means that there is a wide range of variation between the shortest and longest travel times. This inconsistency can lead to unpredictability for passengers who rely on the bus service, making it difficult for them to plan their journeys effectively. In contrast, reliability in travel times would typically be associated with low variance, where travel durations consistently fall within a narrow range. Other options like efficiency in travel routes or speed of service do not directly relate to the concept of variance in travel times, as they focus on different aspects of the service rather than the variability of the time taken for journeys.