Need Sample Size command for Graphing Calculator
The length command is no longer available for students to use in GeoGebra Graphing command because it can do things not appropriate on a graphing calculator such as
Length( <Arc> ) returns the arc length (i.e. just the length of the curved section) of an arc or sector.
Length( <Function>, <Start x-Value>, <End x-Value> ) Yields the length of the function graph in the given interval.
But there is one thing that the length command did that is part of every graphing calculator I have used. The sample size function. On ti-84 it is under 1-Var Stats as n=
Length( <List> ) yields the length of the list, which is the number of elements in the list.
Now that Length command is not available in Graphing calculator could you create another command for the graphing app? Size(<list>) = number of distinct elements in <list>.
Seems a little silly to have a frequencytable(true,<list>) and read the total size in the last row but not have this easily found directly.
I will be needing this for my Statistics students who use GeoGebra graphing app on exams this month.