Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Probability (cards) |
Grade: 9-a Lesson: S3-L1 |
Explanation: The best way to understand statistics is by looking at some examples. Take turns and read each example for easy understanding. |
Examples:
There are 7 blue balls and 10 yellow balls. Two balls are selected randomly from the bag. Find the probability of getting a blue ball.
Step 1a
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Assumption of probability |
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Explanation: Let us assume probability of drawing blue balls = P(E) |
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Step 1b
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Find the number of favorable outcomes,Total number of outcomes |
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Explanation: Number of favorable outcomes to get a blue ball = 7 Total number of balls in the bag = 17 |
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Step 1c
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Finding the probability |
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Explanation: P(E) =\$"Number of favorable outcomes" / "Total number of possible outcomes"\$ P(E) = \$7/17\$ Probability of drawing a blue ball = \$7/17\$ |
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