Nothing
mediana.int <- function(x, pesos = NULL){
if(is.numeric(x)){
varnames <- "variable.x"
}else{
varnames <- as.character(names(x))
}
x <- data.frame(x)
clase <- sapply(x, class)
if (!all(clase %in% c("numeric","integer"))) {
stop("No puede calcularse la median, alguna variable que has seleccionado no es cuantitativa")
}
if(is.null(pesos)){
x <- tidyr::drop_na(x)
y <- names(x)
names(x) <- "x"
N <- nrow(x)
tabla <- x %>% group_by(x) %>%
count() %>%
ungroup() %>%
mutate(Ni = cumsum(n))
} else{
N <- sum(pesos)
tabla <- data.frame(x,pesos) %>%
na.omit
y <- names(tabla)
names(tabla) <- c("x","pesos")
tabla <- tabla %>%
arrange(x) %>%
mutate(Ni = cumsum(pesos))
}
posicion <- min(which(tabla$Ni >= N/2))
if(N/2 == tabla$Ni[posicion]){
mediana <- mean(c(tabla$x[posicion],tabla$x[posicion+1]),na.rm=TRUE)
} else {
mediana <- tabla$x[posicion]
}
return(mediana)
}
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