Texas Instruments TI-84 Plus Guide Book

Chapter 11: Lists 272
stdDev(, variance(
stdDev(, variance(stdDev(, variance(
stdDev(, variance(
stdDev( returns the standard deviation of the elements in list. The default value for freqlist is
1. Each
freqlist element counts the number of consecutive occurrences of the
corresponding element in
list. Complex lists are not valid.
•
variance( returns the variance of the elements in list. The default value for freqlist is 1.
Each
freqlist element counts the number of consecutive occurrences of the
corresponding element in
list. Complex lists are not valid.
stdDev(list[,freqlist]) variance(list[,freqlist])

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-