Chapter #4 notes .docx - Chapter#4 stats probability and relationship-Preview of coming attractions • What is Probability • Conditions of

# Chapter #4 notes .docx - Chapter#4 stats probability and...

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Chapter #4 stats probability and relationship -Preview of coming attractions What is Probability Conditions of probability Counting Rules – Organizing things into groups Procedure for determining/assigning the probability of events Relationship between two events – Tests for Mutually Exclusivity and Independence Applications of Probability – Cards, Dice, and Sports Probability is simply the likelihood or chance some event will occur. Ben Franklin - “In this world nothing can be certain, except death and taxes.” Jim Carrey – “So you are telling me there is a chance.” Conditions for probability The Necessary Conditions for Probability All Probabilities are between 0 and 1 (inclusive of 0 and 1); cannot be negative; closer to 1 more likely to occur; closer to 0 less likely to occur The sum of the probabilities of all outcomes are equal to 1 (relative frequency is a probability) Statistical Experiment – sometimes called random experiment; the experiment may be replicated but the same outcome is not necessarily going to occur Some definitions The Necessary Conditions for Probability All Probabilities are between 0 and 1 (inclusive of 0 and 1); cannot be negative; closer to 1 more likely to occur; closer to 0 less likely to occur

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