Hello.
I'm trying to compute median for a filtered column based on other column but
there was something wrong. I'll show how I did step by step.
Here's the data:
a b c class
1 12 0 90 A-B2 3 97 11 A-B3 78 NA 123 A-C4
NA NA 12 A-C5 8 33 2 A-B6 12 NA 0 A-D
On the command I typed:
1) data = read.csv("data.csv")
2) a.AC <- subset(data, class == "A-C", select = a)
3) median(a.AC)Error in median.default(a.AC) : need numeric data
4) is.numeric(a.AC)FALSE
5) as.numeric(a.AC)Error: (list) object cannot be coerced to type 'double'
How can I fix this? Please help.
Cheers,Suhaila
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