Discrete Random Variables and Probability Distributions
10 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest — every one with a full worked solution. Work through them free, no account needed.
Sample: the first question, solved
What is a "discrete random variable"?
📘 Worked solution
✓A variable that can only take specific, separate (countable) values.
And one from the hard end
X has P(X=1)=0.2, P(X=2)=0.3, P(X=3)=0.4, P(X=4)=? Find the missing probability.
Solution shown after you try it in practice mode.
Work through all 10, easiest to hardest
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