Below is my data set in CSV
I am trying to find confidence interval using ci(x,confidence=0.95). I am getting below error
Error in UseMethod("ci") :
no applicable method for 'ci' applied to an object of class "data.frame"
Pkg :gmodels has been installed
a<-read.csv(file = "path.csv",head = TRUE, sep = ",")
Can you please let me know what mistake I have done and why I am getting above error ?