TI-89 / TI-92 Plus / Voyage™ 200 PLT Statistics with List Editor App List Editor 26
Formulas
(Continued)
Handling Errors Resulting from Attached Formulas
You can use an expression to create or edit a list element. If the expression does not
resolve to a single value, a Data type error message is displayed.
You can also use an expression to create or edit a list. If the expression does not result
in a list, a
Data type error message is displayed.
You can use a formula that generates a different result each time, or example, a formula
that includes a random function or one that refers back to the list the formula is
attached to. The Stats/List Editor evaluates the formula and displays the results, but it
does not attach the formula. You must use … (
List) 4:Attach List Formula to attach a
formula to a list.
On the Home screen, you can view a list with an attached formula; however, you cannot
edit the attached formula. You can only view and edit attached formulas from within
the Stats/List Editor.
You cannot sort a list with an attached formula. If you try to sort a list with an attached
formula, no error message is displayed; however, the sort function is not executed.
Tip: If an error message is returned when you attempt to display a formula-generated list in the list
editor, press N. Then edit the formula: 1) highlight the list name with the attached formula,
2) press Í, and 3) edit the formula in the entry line, or, press Í again and use the Attached
List Formula dialog box to edit the formula.
Detaching a Formula from a List Name
You can detach (clear) a formula from a list name by using the M key or by editing
an element in a list to which a formula is attached.
¦ To detach a formula using the M key:
Move the cursor onto the name of the list (list2) to which a formula is attached.
Press ‘ Í. All list elements remain; however the formula is detached and
the attached formula symbol (é) disappears.
&
¦ To detach a formula by editing a list element:
Move the cursor onto an element (13) of the list (list2) to which a formula is attached.
Press ¸. Enter the new element value (
26) and press ¸. The element
changes, the formula is detached, and the attached formula symbol (é) disappears.
&
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