Ti 83 Plus

"ERR:INVALID DIM" is an error message that comes up when one or more of the calculator's "STAT PLOTS" are set to "on" but there are no values or incomplete values in the "STAT" lists. It can also mean the user entered the wrong type of data.. ERR: INVALID DIM If you try to graph a function and get this message, it means the calculator is trying to graph points from a pair of lists, but it can't because they are different sizes (or empty).

I suppose one workaround is to run this command: {1}→L₁ That will populate the number 1 into L₁ and avoid having to reenter the formula. It's a bit annoying, but I suppose it's workable. Would still like to know if there is a more graceful way of approaching it.. This video describes how to resolve the ERR: INVALID DIM error message on a TI-83 (or TI-84) graphing calculator.