
CHAPTER 12: Probability
Spinner
Explorer
Use this explorer instead
of a spinner to practice determining the probability of an event.

To use the Spinner Explorer, follow
these steps:
 Click "n EQUAL SECTORS" and then click on a number to select the number
of sectors you want your spinner to have.
 Click "OK".
 Click the "SPIN ONCE" button.
 Examine the EVENT AND PROBABILITY CHART. The second last column displays
the probability of an event as a decimal.
 Click "SPIN n MORE TIMES" and then enter the number of times you want
to spin the spinner in the text box.
 Click "OK".
 Examine the chart again and notice the different data. Express the
probability of each event as a percent.
 Try spinning the spinner more times and observe what happens to the
data.

