Discrete Random Variables and Probability Distributions
30 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest, every one with a full worked solution. Work through all 30 with your weekly-lesson access code.
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
A weighted 6-sided die has P(1)=0.05, P(2)=0.10, P(3)=0.15, P(4)=k, P(5)=k, P(6)=3k. Find k and P(X≥5).
Solution shown after you try it in practice mode.
Work through all 30, easiest to hardest
Your Winny Score tracks you as the questions ramp up. Stuck on one? A real Winny Math tutor will walk you through it. First lesson free.
Start practicing