Comment by kenhwang
18 hours ago
You can only make the argument that the Civic is "2% lighter" when it is being compared to a wagon; apples to oranges comparison that invalidates the whole comparison.
They picked that specific year Accord because it's the same size as a sedan as that specific year Civic sedan, so it makes no sense to then compare the weight to the much larger Accord wagon variant. You might as well compare the sedan to a crossover to argue that the sedan didn't get heavier.
The range is 1% heavier to 7% heavier comparing the sedan to the sedan. Both ends of the range are heavier, so "did get heavier" is an accurate statement.
Okay I misread you then, but you're saying the 2000 Accord sedan only has one weight, while the Civic has a several percent range? If that's right then do we know which Civic trim is equivalent to the Accord?
If we know that trim is worth at least 6%, and we don't know how to align the cars, then the confidence interval around "1% to 7%" extends far enough to overlap some negative percents.