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Probability *always presented in fraction form # of desired outcomes -- # of what you want to happen # of total possible outcomes Total # of what can actually happen
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Probability & Probability Rule
Lesson 2-8
Vocabulary
Vocab Word Definition Example
Outcomes The number of results that might happen or can
happen
Probability The chance or likelihood that something will happen
Probability
*always presented in fraction form
# of desired outcomes -- # of what you want to happen # of total possible outcomes Total # of what can actually happen
ProbabilityUsing a die (or six sided-number cube):
What is the probability (P) of rolling a 5?
How many 5s on the die? How many sides on the die? Put the answer as a fraction…
What is the probability (P) of rolling a 2?What is the (P) of rolling an even #?What is P(number less than 8)?
ProbabilityUsing a spinner or pie chart…
What is the P(blue)?
What is the P(not blue)?
What is the P(pink)?
What is the P(green or yellow)?
Homework
p. 97-98 #1-9, 23-30
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