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TI-89 / TI-92 Plus / Voyage™ 200 PLT Statistics with List Editor App … List Menu 66

varPop(

Description

… (

List) Æ 3:Math Æ A:varPop(

varPop( returns a VALUE containing the variance of a population based on the sample

contained in LIST1.

varPop(LIST1) ⇒ VALUE

The statistics functions

varPop( and variance( calculate the variance of a population

differently.

varPop( divides by n, and variance( divides by n-1.

Note: LIST1 must contain at least two elements

Example

Setup:

list1={5,10,15,20,25,30}

1. Highlight the first cell of a list (list2) where you want to return the variance of the

population.

2. To select A:varPop( press:

¦ … (List) 3 j A for the TI-89

¦ … (List) 3 A for the TI-92 Plus / Voyage™ 200 PLT

The varPop( function is displayed in the entry line. Enter the list (list1) from which

you want to return the variance of the population.

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 variance of the population.

Note: To generate a decimal approximation 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