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In a large high school, Mr. Jones found the average grade in his biology class ($n = 30$) was $80.2$. This compares to the school-wide average of $77.3$.
Which of the value is a statistic and which is a parameter?
Statistic: $80.2$; parameter: $77.3$
Statistic: $77.3$; parameter: $80.2$
Both $80.2$ and $77.3$ are statistics.
Both $80.2$ and $77.3$ are parameters.
Parameter: $80.2$; $77.3$ is neither a statistic nor a parameter.