Step by step
The question
Question: A coin is flipped 200 times and lands heads 104 times.
Find the experimental probability of heads.
1 Times it happened over times tried
It happened 104 times out of 200 flips.
So the experimental probability is 104/200.
Experimental probability comes from what really happened in the experiment.
104 and 200 can both be divided by 8.
So it is 13/25.
As a percent: 25 times 4 is 100.
13 times 4 is 52.
So it is 52%.
2 Compare with the theory
In theory, a coin has 2 sides, so heads is 1 out of 2: 50%.
Careful!
That is the theory.
The question asks what really happened: 52%.
52% is close to 50%.
With more flips, it usually gets even closer.
3 Check
Let's check: 52% of 200 flips should be the 104 times.
52% of 200 is 104.
So the answer is right!
Let's look back.
First: times it happened over times tried.
Then: compare with the theory.
Last: check.