Question

The gas mileage of an automobile first increases and then decreases as the speed increases. Suppose that this relationship is very regular, as shown by the data in the table on speed (miles per hour) and mileage (miles per gallon). egin{tabular}{|c|c|c|c|c|c|} hline Speed & 30 & 40 & 50 & 60 & 70 \ hline Mileage & 24 & 28 & 30 & 28 & 24 \ hline end{tabular} To access the complete data set, click the link for your preferred software format: Excel Minitab JMP SPSS TI R Mac-TXT PC-TXT CSV CrunchIt! Make a scatterplot of mileage versus speed. You should notice that the correlation between speed and mileage is $r = 0$.

          The gas mileage of an automobile first increases and then decreases as the speed increases. Suppose that this relationship is very regular, as shown by the data in the table on speed (miles per hour) and mileage (miles per gallon).

egin{tabular}{|c|c|c|c|c|c|}
hline
Speed & 30 & 40 & 50 & 60 & 70 \
hline
Mileage & 24 & 28 & 30 & 28 & 24 \
hline
end{tabular}

To access the complete data set, click the link for your preferred software format:
Excel Minitab JMP SPSS TI R Mac-TXT PC-TXT CSV CrunchIt!
Make a scatterplot of mileage versus speed. You should notice that the correlation between speed and mileage is $r = 0$.

The gas mileage of an automobile first increases and then decreases as the speed increases. Suppose that this relationship is very regular, as shown by the data in the table on speed (miles per hour) and mileage (miles per gallon).

egintabular|c|c|c|c|c|c|
hline
Speed 30 40 50 60 70 hline
Mileage 24 28 30 28 24 hline
endtabular

To access the complete data set, click the link for your preferred software format:
Excel Minitab JMP SPSS TI R Mac-TXT PC-TXT CSV CrunchIt!
Make a scatterplot of mileage versus speed. You should notice that the correlation between speed and mileage is r = 0.

Added by Cassandra M.

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