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An electronic sign that showed the speed of motorist was installed on a road. The line plots
below show the speed of some motorist before and after the sign was installed


A. The mean speed and the range of the speeds of the motorista decreased
B. The median speed and the range of the speed of the motorists increased
C. The mean speed of the motorista decreased and the range of the speeds incred
D. The media speed of the motorists increased and the range of the speeds decreased
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An electronic sign that showed the speed of motorist was installed on a road The line plots below show the speed of some motorist before and after the sign was class=

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Answer:

Correct answer is A

Step-by-step explanation:

adioabiola

The answer choice which represents the inference from the dot plots is; Choice A; The mean speed and the range of the speeds of the motorists decreased.

Dot Plots and Interpretation

According to the dot plot indicating the frequency of each speed value;

It follows that 12 motorists passed before the sign was installed and 11 motorists passed after the sign was installed.

Upon, computation, it follows that, the mean and range of the of the speed of the motorists decreased.

Read more on mean, median, range;

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