ex09_031

ex09_031 - 7 25_35 1 22 8 25_35 2 19 9 35up 1 28 10 35up 2...

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group income city count 1 u10 1 70 2 u10 2 62 3 10_20 1 52 4 10_20 2 63 5 20_25 1 69 6 20_25 2 50
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Unformatted text preview: 7 25_35 1 22 8 25_35 2 19 9 35up 1 28 10 35up 2 24...
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