Z-Scores and the Standard Normal Distribution
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 "z-score"?
📘 Worked solution
✓A measure of how many standard deviations a value is from the mean.
And one from the hard end
Using the same exam (μ=68, σ=9), find the score corresponding to a z-score of -2.2.
Solution shown after you try it in practice mode.
Work through all 30, easiest to hardest
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