Lesson 1
1. Lesson 1
1.6. Explore 2
Module 1: Probability
probability: the chance of an event happening, expressed as a percentage, fraction, ratio, or a statement 1
experimental probability: a ratio of the number of occurrences of a particular event during an experiment or trial to the total number of trials conducted 2
1-2 Source: MathWorks 12 Student Book/Teacher Guide. (Vancouver: Pacific Educational Press, 2011.)
A word that can easily replace chance is probability.
If the probability is determined from an experiment, such as rolling a die many times and making a frequency table, then it is called experimental probability. The activity you did in Discover was an example of experimental probability.
In Try This 2 you will show the different ways of representing probabilities.
Try This 2
Outcome |
Frequency |
1 |
5 |
2 |
9 |
3 |
6 |
4 |
11 |
5 |
4 |
6 |
1 |
Total |
36 |
The following table expresses the experimental probability of each of the outcomes from rolling one die using the preceding frequency table.
The probabilities are in the form of fractions, decimals, percentages, and words.
Copy and complete the table by filling in the missing blanks. Round the decimal to the nearest thousandth. The first row has been done for you.
EXPERIMENTAL PROBABILITY |
||||
Outcome |
Fraction |
Decimal |
Percentage |
Words |
1 |
|
0.139 |
13.9% |
5 out of 36 |
2 |
|
|
|
|
3 |
|
|
17% |
|
4 |
|
0.31 |
|
|
5 |
|
|
|
|
6 |
|
|
|
1 out of 36 |
Save your responses in your course folder.