The data set contains observations from the years 1871 through 2020 , so the midpoint is 1945.5
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The data set contains observations from the years 1871 through 2020 , so the midpoint is 1945.5 . For some records, the record temperature occurred more than once. In these cases, only the most recent year is listed. Explain how this might cause the mean to be greater than the midpoint of 1945.5 , even if records are equally likely to occur in any year.
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