I want to qqnorm every column in a table. When I try the first column
using
qqnorm(table$column1), it worked.
But when I use
qqnorm(table[1]), it tells me "Error in stripchart(x1, ...) : invalid
plotting method".
What happen? How can I make a function that qqnorms every column?
thanks a lot.
-jiong
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