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which of the following is a statistical question

AHow many floors are in the Empire state building?
BHow many states are in the united states of America
CHow tall is the Washington monument in Washington D.C
DHow old was each U.S president when he was elected?

Verified Answer :

DHow old was each U.S president when he was elected?
Since you would probably need a graph or something to show this.

I picked d too because it seems like a question that would be statistically