As I would see it:- 20mph and 30mph are variables, or you might think of them as parameters or measurement points. The actual number of deaths at 20mph or 30mph can be called statistics. A reduction of 80% could be called a statistic for the change in those variables.
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AnonymousAre 80%, 20mph and 30mph "statistics"?Not to me. Only the 80% looks like statistics. The others are just the original and proposed speed limits.