Car Weight vs. MPG
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The scatterplot of car's weight vs. their MPG appears to form a linear shape, it is strong, and
there are not apparent outliers on the graph. It also appears to have a negative association.
Since the correlation (r) equals .9054, this proves that it is strongly negative. This indicates
that the lighter the car is, the higher or better, gas mileage it gets. So, the heavier the car,
the worse the gas mileage it is. For example, a car that weighed around two thousand
pounds had a MPG of around thirtyone or thirtytwo. On the other hand a car that weighed
closer to four thousand pounds, the MPG was around fifteen, which is considerably worse
than the lighter car.
Result 1: Simple Linear Regression  car' weight vs. MPG [Info]
Simple linear regression results:
Dependent Variable: MPG Independent Variable: Weight MPG = 48.8024  8.367461 Weight Sample size: 37 R (correlation coefficient) = 0.9054 Rsq = 0.8196811 Estimate of error standard deviation: 2.7817576 Parameter estimates:
Analysis of variance table for regression model:

Result 2: Scatter Plot weight vs. MPG [Info]

HTML link:
<A href="http://www.statcrunch.com/5.0/viewreport.php?reportid=5572">Car Weight vs. MPG</A>
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Oct 14, 2008
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