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Rev 37798 Rev 81437
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infert <- data.frame(
 1 
infert <- data.frame(
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 education = structure(factor(c(1, 1, 1, 1, 2,
 2 
 education = factor(c(1, 1, 1, 1, 2,
3 
	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
 3 
	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
4 
	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3,
 4 
	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3,
5 
	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 5 
	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
6 
	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 2, 2,
 6 
	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 2, 2,
7 
	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
 7 
	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
Line 9... Line 9...
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	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 9 
	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
10 
	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 2, 2, 2, 2,
 10 
	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 2, 2, 2, 2,
11 
	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
 11 
	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
12 
	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3,
 12 
	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3,
13 
	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 13 
	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
14 
	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3), levels=1:3),
 14 
	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3), levels=1:3,
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	class = "factor", .Label = c("0-5yrs", "6-11yrs", "12+ yrs")),
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	labels = c("0-5yrs", "6-11yrs", "12+ yrs")),
16 
 age = c(26, 42, 39, 34, 35, 36, 23, 32,
 16 
 age = c(26, 42, 39, 34, 35, 36, 23, 32,
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	21, 28, 29, 37, 31, 29, 31, 27, 30, 26, 25, 44, 40, 35, 28, 36,
 17 
	21, 28, 29, 37, 31, 29, 31, 27, 30, 26, 25, 44, 40, 35, 28, 36,
18 
	27, 40, 38, 34, 28, 30, 32, 34, 42, 32, 39, 35, 36, 34, 30, 28,
 18 
	27, 40, 38, 34, 28, 30, 32, 34, 42, 32, 39, 35, 36, 34, 30, 28,
19 
	39, 35, 41, 37, 30, 37, 28, 27, 26, 38, 24, 36, 27, 28, 29, 36,
 19 
	39, 35, 41, 37, 30, 37, 28, 27, 26, 38, 24, 36, 27, 28, 29, 36,
20 
	28, 28, 28, 27, 35, 25, 34, 31, 26, 32, 21, 28, 37, 25, 32, 25,
 20 
	28, 28, 28, 27, 35, 25, 34, 31, 26, 32, 21, 28, 37, 25, 32, 25,