pause on
infile ybar1 ybar2 ybar50 ybar1000 beta2 beta5 beta50 beta1000 using xdat
hist ybar1
pause
hist ybar2
pause
hist ybar50
pause
hist ybar1000
pause
replace beta2=. if beta2<-50
replace beta2=. if beta2>50
hist beta2
pause
hist beta5
pause
hist beta50
pause
hist beta1000