A study of traffic safety show a correlation of 0.57 between average speed of traffic and number of fatal accidents for a particular stretch of highway.This means that
A)speed kills.
B)as speed increases,fatalities decrease.
C)fatalities tend to increase as average speed increases.
D)every 1 mile per hour increase in average speed increases the number of traffic fatalities by .57.

Question

Quizplus · Accepted Answer

The correlation coefficient of 0.57 suggests a moderate positive correlation between average speed and number of fatal accidents. This means that as average speed increases, we can expect fatalities to increase as well. However, it does not necessarily mean that speed is the sole cause of the fatalities, as there may be other factors (such as road conditions or driver behavior) that also contribute to these accidents. Therefore, choice C – "fatalities tend to increase as average speed increases" – is the most appropriate answer.

A Study of Traffic Safety Show a Correlation of 0