Question 1
Observation: Traffic accidents decreased by 50% after installing speed cameras
What causal inference is most reasonable?
This inference uses temporal precedence (the cause occurred before the effect) and correlation to suggest causation: Speed cameras likely reduced traffic accidents
However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.
However, be aware of alternative explanations (confounding variables, regression to the mean, etc.) that might also explain the observation.