Could this be a case of correlation =/= causation? If we consider independently when batteries may be low, and when prices may be high, it's possible those over

Could this be a case of correlation =/= causation? If we consider independently when batteries may be low, and when prices may be high, it's possible those overlap. For instance, at the end of the day on Friday or Saturday, after being out late at night, the battery is more likely to be low; similarly, Uber prices are probably higher on weekend late-nights with higher demand.