试一下这个吧
ep <- 0.5
fun_1 <- function(x){
vec_1 <- 1:x
vec_2 <- abs(vec_1/x - ep)*dbinom(vec_1,x,ep)
result <- sum(vec_2)
return(result)
}
AF <- vector("numeric", nrow(Fund03))
for(i in seq_along(AF)){
AF[i] <- fun_1(Fund03$Number[i])
}