What is Xi and Yi in statistics?! Also is Xi class marks?

1.	What is Xi and Yi in statistics?! Also is Xi class marks?
Answer» <P>ANSWER: PAIRS of LETTERS xi and yj where xi is followed by yj. This is called the joint probability. p(x = xi; y = yi). If we x x to, SAY xi then the probability of y taking on a particular. value, say yj, is given by the conditional probability.

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PAIRS of LETTERS xi and yj where xi is followed by yj. This is called the joint probability. p(x = xi; y = yi). If we x x to, SAY xi then the probability of y taking on a particular. value, say yj, is given by the conditional probability.

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What is Xi and Yi in statistics?! Also is Xi class marks?

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