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S2 sampling: how to know if I listed all samples? Any rules? Watch

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Size:  8.8 KBFor example how do i know if the number of possible samples in this question is 8?
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    Anyone know this?
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    Work through it systematically, e.g.
    (1,1,1)
    (2,1,1), (1,2,1), (1,1,2)
    (1,2,2), (2,1,2), (2,2,1)
    (2,2,2)

    The only way really
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    The sample of size 3 is  (X_1,X_2,X_3) there are 2 possible options for  X_1 two possible options for X_2 and two possible options for X_3, so the number of possible samples is 2\times 2 \times 2
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    (Original post by NotNotBatman)
    The sample of size 3 is  (X_1,X_2,X_3) there are 2 possible options for  X_1 two possible options for X_2 and two possible options for X_3, so the number of possible samples is 2\times 2 \times 2
    Thanks a lot!
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    You can also check that the probabilities add to 1 at the end.
 
 
 
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