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Hi al, I am looking for a R command to test the difference of two linear regressoon betas. Lets say I have data x1, x2...x(n＋1). beta1 is obtained from regressing x1 to xn onto 1 to n. beta2 is obtained from regressing x2 to x(n＋1) onto 1 to n. Is there a way in R to test whether beta1 and beta2 are statistically different? Thanks a lot! [[alternative HTML version deleted]]

I am trying to create a frequency distribution and I am a bit confused. Here are the commands I have entered: > data <- read.csv(file="40609_sortedfinal.csv",head=TRUE,sep=",") > NumberOfActionsByStatus = data$STATUS > NumberOfActionsByUser = data$ETS_LOGIN > NumberOfBidOffer = data$BID_OFFER > NumberOfActionsByUser.freq = table(NumberOfActionsByUser) >