Texas Instruments TI-83-Plus Software Guide

Section 2: Precision & Accuracy Name
Date
Fundamental Topics in Science © 2001 Texas Instruments

Try-It!™ 2-6

Calculate standard deviation
Standard deviation is an excellent indicator of the precision of measurements. Range (the
difference between the maximum and minimum measurements) also shows precision. Use your
TI
1
83 Plus to calculate the standard deviation and range of this set of measurements.
To Do This Press Display
1. Copy the
stdDev(
function from the
LIST MATH
menu to the home screen.
\  a a
7:stdDev(
2. Enter the list name, complete the
expression, and evaluate.
Tip:
This is an alternate way to enter a
list name.
\ G
E
b
3. Calculate the range (maximum value
minus minimum value).
\  a a
2:max(
\ G
E

\  a a
1:min(
\ G
E
b
What value did you calculate for the standard deviation? For the range? Given these calculations,
describe how accurate these measurements were; how precise they were.
#

Texas Instruments TI-83-Plus Specifications

General

Display Type	LCD
Display Resolution	96 x 64 pixels
Power Source	4 AAA batteries
Programming Language	TI-BASIC, Z80 Assembly
Backup Power	CR1616 or CR1620 lithium battery
RAM	24 KB
Processor	Zilog Z80
Weight	7.4 oz (210 g) with batteries
Dimensions	7.3 x 3.5 x 0.9 inches