Bonus
Have you finished early? Are you ready for an extra challenge?
This bonus section is extra hard. You will be asked to find sections of a Venn diagram that correspond to cells of a two-way table.
Read through the examples below then start the challenge!
One of the cells in the two-way table below is highlighted.
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b |
not b |
total |
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a |
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not a |
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total |
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Once the table is filled in, this cell would tell us the number of items that have attribute 'a' but not attribute 'b'.
Where would this number appear in a Venn diagram? In other words, what section corresponds to 'a and not b'?
It would be the part of the ‘a’ circle that does not overlap with the ‘b’ circle:
So the green section of the Venn diagram above corresponds to the highlighted cell in the table.
One of the cells in the two-way table below is highlighted.
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b |
not b |
total |
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a |
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not a |
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total |
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Once the table is filled in, this cell would tell us the total number of items that do not have attribute 'b'.
Where would this number appear in the Venn diagram? In other words, what sections correspond to 'not b'?
It would be the sections not in the ‘b’ circle.
So the coloured sections of the Venn diagram above correspond to the highlighted cell in the table.