chapter 6 OP STAT TERMS
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| show | the chances of something to occur in all possible subjective options and ways it can, doesnt neccesarily gaurantee much.
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| random process | show 🗑
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| probability | show 🗑
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| show | says that if we observe more and more trials of any random process, the proportion of times that a specific outcome occurs approaches its probability.
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| show | imitates a random process in such a way that simulated outcomes are consistent with real-world outcomes.
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| event | show 🗑
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| complement rule | show 🗑
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| Venn diagram | show 🗑
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| show | The probability that one event happens given that another event is known to have happened is called a conditional probability. The conditional probability that event A happens given that event B has happened is denoted by 𝑃(A|B).
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| show | if knowing whether or not one event has occurred does not change the probability that the other event will happen.
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| show | For any random process, the probability that events A and B both occur can be found using the general multiplication rule: P ( A and B) = P ( A n B) = P(a)x p(b/a)
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| show | shows the sample space of a random process involving multiple stages. The probability of each outcome is shown on the corresponding branch of the tree. All probabilities after the first stage are conditional probabilities.
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| random variable | show 🗑
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| probability distribution | show 🗑
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| show | X takes a fixed set of possible values with gaps between them.
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| show | is its average value over many, many trials of the same random process.
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| standard deviation of a discrete random variable | show 🗑
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| show | can take any value in an interval on the number line.
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| Independent random variables | show 🗑
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| Binomial random variable, | show 🗑
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| show | The probability distribution of X is a binomial distribution. Any binomial distribution is completely specified by two numbers: the number of trials n of the random process and the probability p of success on each trial.
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| show | The number of ways to arrange x successes among n trials
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| 10% condition | show 🗑
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| show | says that the probability distribution of X is approximately Normal if 𝑛 𝑝 ≥ 10 and 𝑛 ( 1−𝑝 ) ≥10
That is, the expected numbers (counts) of successes and failures are both at least 10.
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