Envision Math 2.0: Grade 7, Volume 2
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Envision Math 2.0: Grade 7, Volume 2 View details
3. Understand Experimental Probability
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Exercise 10 Page 371

8 %

Practice makes perfect
When calculating the experimental probability, we are comparing the number of times the event occurs to the number of times the experiment is done. P=Times the Event Occurs/Times the Experiment Is Done

We know that 100 people were surveyed. This means that number of times the experiment is done is 100.

Airport Destination
Destination Number of Responses
City A 28
City B 34
City C 16
City D 14
City E 8
Out of 100 people surveyed 8 is going to City E, which is the number of times the event occurs. Now we have enough information to calculate P(City E).
P=Times the Evnent Occurs/Times the Experiment is Done
P(City E)=8/100
P(heads) = 8 %
The experimental probability that a person is going to City E is 8 %.