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Probability Pulse
Five questions across 7 topics. Two minutes.
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Probability
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foundation (1/10)
conceptual
What does it mean for random variables
X
1
, ...,
X
n
to be i.i.d.?
Hide and think first
A.
They are drawn sequentially from the same finite dataset without replacement between draws
B.
They are independent of each other and all have the same probability distribution
C.
They share the same mean and variance but may follow completely different distributional families
D.
They are correlated variables that share identical marginal distributions but may depend on each other
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