https://learn.365datascience.com/courses/probability/probability-frequency-distribution Here at 1.45, it is mentioned expected value is p(2)*2 +p(3)*3........ where '2' and '3' are no of times '2' and '3' featured in the table. in the frequency distribution table '2' features one time and '3' features '2' times so it should be p(2)*1+p(3)*2.... e.t.c Please clarify

Hey Amar, Thanks for reaching out! If you go back, you'll see that we're saying that we take the number of times each value appears in the table to determine the probability of each outcome. Hence, the table helps us find p(2), rather than 2. Hence, it's the sum of the product between the likelihood of an outcome p(x) and it's value x. Hence, we have p(2)*2 + p(3)*3 + ... + p(12)*12 = (1/36) * 2 + (2/36) * 3 + ... + (1/36) * 12 and so on. Best, 365 Vik

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Amar Reddy

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27 Mar 2020

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27 Mar 2020

Formula used for sum of cards probability problem

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Viktor Mehandzhiyski

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27 Mar 2020

Formula used for sum of cards probability problem

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