When calculating the experimental probability that a spinner would land on a 4, 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
This is very similar to the Probability Formula. Let's first look at the spinner.
The spinner has 4 parts, numbered 1 to 4. Now, we can look at the frequency table and find the number of times the spinner will land on 4.
Outcome
Tally
Frequency
1
|||
3
2
|||| ||
7
3
|||| |
6
4
||||
4
Looking at the table, the number of times the event occurs is equal to 4. In order to find the number of times the experiment is done, we should calculate the sum of all frequencies.
3+7+6+4= 20 ← & Number of Times the & Experiment
Is Done
The experiment is done 20 times. Now, we have enough information to calculate P(4).
P=Times the Event Occurs/Times the Experiment Is Done
