import sum from "./sum";
import iserror from "./iserror";Copyright 2015-2021 JC Fisher
import sum from "./sum";
import iserror from "./iserror";AVERAGE computes sum of items divided by number of items
export default function average(...items) {compute sum all of the items.
var v = sum(...items);return sum when computed error.
if (iserror(v)) {
return v;
}return sum divided by item count
return v / items.length;
}