Normality test in R

Question

[shivangi.agarwal800]

I want to test normality in R, my data looks like:

file:///home/ravi/Pictures/data.png

I want to do normality test for each of the transcript. I used the code as:

my_data <- read.csv("b.csv")
my_data
shapiro.test(my_data$t1)

When I am doing shapiro.test(my_data) Error: is.numeric(x) is not TRUE It gave me result for t1, likewise I want to do for all, how to do it at once?

[shivangi.agarwal800]

Data is like this, where each row represents patient's ids (p1,p2,p3,p4,p5,p6) and each column represents transcript ids (t1,t2,t3,t4)

patient_ids t1                    t2                                 t3                     t4

p1  -0.3348084704   -0.2732068627   -0.7152915678   -14.6515904534

p2  -1  0.3220577055    -0.3031125014   -195.4591868222

p3  -100.4900687014 0.5422026753    -244.7736997568 0.3755005677

p4  -101.9815047041 -0.4288370173   -0.2881487096   -1.158309705

p5  -0.7065238341   -0.2664395277   -1  0.0449198583

p6  -275.2507273589 0.2043724691    -201.5617118211 -20.2877717975

[GenoMax]

You will find this useful: How to add images to a Biostars post
You can't link/upload images on your local desktop to Biostars directly.

Please use the formatting bar (especially the code option) to present your post better. I've done it for you this time.

Thank you!

Answer 1

[cpad0112]

apply(my_data [,-1],2, shapiro.test)

try an easier one:

library(MVN)
mvn(my_data[,-1], univariateTest = "SW")$univariateNormality