CK-12-Basic Probability and Statistics Concepts - A Full Course

3.6. Theoretical and Experimental Coin Tosses http://www.ck12.org

Choose OK by pressing

GRAPH

and go back to the main screen. Then choose TOSS by pressing

WINDOW

.

To find the frequency, we need to press the

I

arrow to view the frequency for the tossing experiment.

We see the frequency of tails is 30. Now we can calculate the experimental probability.

P(tails) =

30

50

= 0. 60

Example B

What if the fair coin is tossed 100 times? What is the experimental probability? Is the experimental probability
getting closer to the theoretical probability?

To find the experimental probability for this example, we need to run the Toss Coins simulation in the probability
simulator again. You could also, like in Example A, actually take a coin and flip it 100 times, each time recording if
you get heads or tails. You can see how the technology is going to make this experiment take a lot less time.

Choose Toss Coins and then choose SET by pressing

ZOOM

.