Re: One question about Q-Q plot

[Peter Ehlers <ehlers@math.ucalgary.ca>]

Chih-Hao Chien wrote:

> Dear all,
> Following part is my R code for Q-Q plot.
>  
>
> > file <- read.csv(file=filepath,sep=",",header=T)
> > file
>    Russell.2000.Growth
> 1                -0.01
> 2                 0.23
> 3                -0.11
> 4                -0.10
> 5                -0.09
> 6                 0.13
> 7                -0.09
> 8                 0.11
> 9                -0.05
> 10               -0.08
> 11               -0.18
> 12                0.06
> 13                0.08
> 14               -0.14
> 15               -0.09
> 16                0.12
> 17                0.02
> 18                0.03
> 19               -0.09
> 20               -0.06
> 21               -0.16
> 22                0.10
> 23                0.08
> 24                0.06
> 25               -0.04
> 26               -0.06
> 27                0.09
> 28               -0.02
> 29               -0.06
> 30               -0.08
> 31               -0.15
> 32                0.00
> 33               -0.07
> 34                0.05
> 35                0.10
> 36               -0.07
> 37               -0.03
> 38               -0.03
> 39                0.02
> 40                0.09
> 41                0.11
> 42                0.02
> 43                0.08
> 44                0.05
> 45               -0.03
> 46                0.09
> 47                0.03
> 48                0.00
>
> > qqnorm(file)
> Error in order(y) : unimplemented type 'list' in 'orderVector1'---- What does 
> it mean ?
>
>
> How to implement successfully this data for Q-Q plot ?
> Thanks a lot.
>  
> C.H
Don't feed a data frame to qqnorm(); give it a vector:

qqnorm(file$Russell.2000.Growth)

Peter Ehlers