Percentiles and Quartiles
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 percentage of data values fall below the first quartile (Q1)?
📘 Worked solution
✓By definition Q1 marks the point below which about a quarter of the data lies.
And one from the hard end
14 assignment scores: 45, 50, 55, 58, 62, 65, 68, 70, 73, 76, 80, 84, 88, 95. Find Q1, median, Q3, and IQR.
Solution shown after you try it in practice mode.
Work through all 30, easiest to hardest
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