Algebra 2, Unit 7: Probability and Statistics. Key terms, formulas, and worked-example cues a high school student meets for this unit, building on prior units. Front: the term, formula name, or short problem cue. Back: the definition, formula, or solution method.
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- What is probability?
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A measure of how likely an event is to occur, between 0 and 1- What is the probability of an impossible event?
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0- What is the probability of a certain event?
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1- What is the formula for basic probability?
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Number of favorable outcomes divided by total possible outcomes- What is a sample space?
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The set of all possible outcomes of an experiment- What is an event in probability?
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A subset of the sample space- What are independent events?
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Events where the outcome of one does not affect the outcome of the other- What are dependent events?
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Events where the outcome of one affects the probability of the other- What is the formula for the probability of two independent events both occurring?
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Multiply their individual probabilities- What is mutually exclusive events?
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Events that cannot both occur at the same time- What is the addition rule for mutually exclusive events?
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P(A or B) = P(A) + P(B)- What is the general addition rule for probability?
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P(A or B) = P(A) + P(B) - P(A and B)- What is conditional probability?
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The probability of an event occurring given that another event has already occurred- What is the notation for conditional probability?
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P(A | B)- What is a permutation?
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An arrangement of objects where order matters
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