Plus - Texas Instruments TI-83 Plus Software Manual

Section 2: Precision & Accuracy
2: Precision & Accuracy
_
Determining significant figures
For 125.0 milliliters of water, students reported the following measurements of mass.
118.6 g
120 g
Use the
SIG-FIG CALCULATOR
figures in each measurement, then to convert each measurement to four significant figures.
To Do This
1. Display the
Note: You also can access the
menu from the
TOOLS
CHAPTERS
2. Display the
3. Enter the first value from the data.
The number of significant figures is
shown on the right.
4. Repeat for all measurements and
complete the table below.
Original data
118.6
120
127.308
122.4
130
124.2
121.0
126.5
123.084
125
Fundamental Topics in Science
127.308 g
122.4 g
in
SCIENCE TOOLS
menu.
SCIENCE TOOLS
SCIENCE
SCIENCE
menu.
.
SIG-FIG CALCULATOR
Number of significant figures
4
© 2001 Texas Instruments
Name
Date
_ Try-It!™ on Your TI 83 Plus
130 g 121.0
124.2 g 126.5
first to determine the number of significant
Press
If necessary, exit FunSci
Select SciTools
to leave the title page
1:SIG-FIG CALCULATOR
118.6
If appears in reverse video,
SCI
à Ä
press
DEC SCI
Data with four significant figures
118.6
g 123.084 g
g 125 g
Display
•
Try-It!™ 2-1