[R] Removing points

2010-05-12 Thread Blue.Egg

I have a some data, and imagine a column of how many parasitic eggs found in
the stool of some children some of the children we do not have this data so
we put -1 in stead. How can you remove the people with -1, to calculate
means and do box plots. Thank you!
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[R] More complex historgram

2010-05-13 Thread Blue.Egg

CID DISTRICTSCHOOL  YRofSTUDY   DATE.ENTRY  SEX AGE 
EGGS.M  EGGS.MIIEGGS.H
POBADN0130  PO  Badongo 0   18.1.08 2   11  0   -1  
73
POBADN0117  PO  Badongo 0   18.1.08 1   10  0   -1  
59
POBADN0160  PO  Badongo 0   18.1.08 1   11  0   -1  
56
POBADN0112  PO  Badongo 0   18.1.08 2   10  0   -1  
47
POBADN0053  PO  Badongo 0   18.1.08 1   8   0   -1  
42
POBADN0141  PO  Badongo 0   18.1.08 2   11  0   -1  
36
POBADN0056  PO  Badongo 0   18.1.08 1   8   0   -1  
26
POBADN0127  PO  Badongo 0   18.1.08 1   10  0   -1  
26
POBADN0136  PO  Badongo 0   18.1.08 2   11  0   -1  
24
POBADN0153  PO  Badongo 0   18.1.08 1   11  0   -1  
22
POBADN0092  PO  Badongo 0   18.1.08 1   9   0   -1  
21
POBADN0087  PO  Badongo 0   18.1.08 1   9   0   -1  
17
POBADN0145  PO  Badongo 0   18.1.08 1   11  0   -1  
16
POBADN0107  PO  Badongo 0   18.1.08 2   10  0   -1  
15
POBADN0118  PO  Badongo 0   18.1.08 1   10  0   -1  
14
POBADN0150  PO  Badongo 0   18.1.08 1   11  0   -1  
14
POBADN0079  PO  Badongo 0   18.1.08 2   9   0   -1  
12
POBADN0121  PO  Badongo 0   18.1.08 1   10  0   -1  
11
POBADN0158  PO  Badongo 0   18.1.08 1   11  0   -1  
10
POBADN0148  PO  Badongo 0   18.1.08 1   11  0   -1  
7
POBADN0155  PO  Badongo 0   18.1.08 1   11  0   -1  
6
POBADN0063  PO  Badongo 0   18.1.08 1   8   0   -1  
4
POBADN0144  PO  Badongo 0   18.1.08 2   11  0   -1  
2
POBADN0002  PO  Badongo 0   18.1.08 2   7   0   -1  0
POBADN0003  PO  Badongo 0   18.1.08 2   7   0   -1  0

I need to find out how can I on R, plot the mean egg of EGGS.H according to
the district, or sex.

Also how to compare the eggs of females on year of study x (in t.test)

Thank you!
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