Collect data from primary and secondary sources to compare two or more sets of data, and organize it in frequency tables and stem-and-leaf plots
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
Is data from your own classroom survey a primary or secondary source?
📘 Worked solution
✓Primary.
And one from the hard end
Compare a primary-source approach (your own rain gauge) to a secondary-source approach (official weather records) for measuring a city's yearly rainfall. Which is likely more reliable, and why?
Solution shown after you try it in practice mode.
Work through all 30, easiest to hardest
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