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TI-89 / TI-92 Plus / Voyage™ 200 PLT Statistics with List Editor App … List Menu 50

cumSum(

Description

… (

List) Æ 2:Ops Æ 6:cumSum(

cumSum( returns a LIST of the cumulative sums of the elements in LIST1, starting at

element 1.

cumSum(LIST1) ⇒ LIST

Example

Setup:

list1={1,1/3,1/5,1/7,1/9}

1. Highlight the list (list2) where you want to return the cumulative sums of the

elements.

2. Press … (List) and select 2:Ops. Then select 6:cumSum(. The cumSum( command is

displayed in the entry line. Enter the list (

list1) for which you want to calculate the

cumulative sums.

Tip: You can press 2 °, highlight a list,

and then press ¸ to paste the list name into

the list editor. Be sure to close arguments with a

right parenthesis (d).

You can also press … (List) and select 1:Names

to display the VAR-LINK [All] menu.

3. Press ¸ to calculate and display the cumulative sums.

Note: To generate a decimal approximation of

list1, press ¥ ¸ for step 3. To generate a

decimal approximation for a single-

element value,

move the cursor

to the fraction for which you want

the approximate decimal, press ¸

to highlight

it on the entry line, and then press ¥ ¸.

You can also set the calculator to

APPROXIMATE mode. (Press 3 „ and then

set Exact/Approx to APPROXIMATE.)

Texas Instruments Voyage 200 Guide Book

Other manuals for Texas Instruments Voyage 200