Step by step
The question
Question: A coin is flipped 50 times and lands heads 28 times.
Find the experimental probability of heads.
1 Times it happened over times tried
It happened 28 times out of 50 flips.
So the experimental probability is 28/50.
Experimental probability comes from what really happened in the experiment.
28 and 50 can both be divided by 2.
So it is 14/25.
As a percent: 25 times 4 is 100.
14 times 4 is 56.
So it is 56%.
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: 56%.
56% is close to 50%.
With more flips, it usually gets even closer.
3 Check
Let's check: 56% of 50 flips should be the 28 times.
56% of 50 is 28.
So the answer is right!
Let's look back.
First: times it happened over times tried.
Then: compare with the theory.
Last: check.