[R] I want to delete "yhat" and transpose "Response" into a vector

[BR_email]

Hi R'ers:
I need a little help.
Thanks in advance.
Bruce

dd    <- read.csv("C:/R_Data/firstRdata.csv", sep=",", header=TRUE)
dd    <- data.frame(yhat,Response)
attach(dd)

dd <- dd[order(-yhat),]
dd
# delete yhat and transpose Response into a vector
Attached is dataset.

-- 
Bruce