To deselect equations:
Access the list of equations.
Select each equal sign (=).
Continue, until all equations are deselected.
To clear equations:
Access the list of equations.
Use the arrow keys to navigate to the right of each equal sign (=) and clear them.
Repeat until all equations are deleted.
To draw default histogram:
Access the ZOOM menu.
Select
<9:ZoomStat>
The histogram will show with a window automatically set.
To draw custom histogram:
Access
to set the graph parameters.
${X}_{\mathrm{min}}=-2.5$
${X}_{\mathrm{max}}=3.5$
${X}_{\mathrm{scl}}=1$ (width of bars)
${Y}_{\mathrm{min}}=0$
${Y}_{\mathrm{max}}=10$
${Y}_{\mathrm{scl}}=1$ (spacing of tick marks on y-axis)
${X}_{\mathrm{res}}=1$
Access
to see the histogram.
To draw box plots:
Access graphing mode.
,
[STAT PLOT]
Select
<1:Plot 1>
to access the first graph.
Use the arrows to select
<ON>
and turn on Plot 1.
Use the arrows to select the box plot picture and enable it.
Use the arrows to navigate to
<Xlist>
If "L1" is not selected, select it.
,
[L1]
,
Use the arrows to navigate to
<Freq>
.
Indicate that the frequencies are in
[L2]
.
,
[L2]
,
Go back to access other graphs.
,
[STAT PLOT]
Be sure to deselect or clear all equations before graphing using the method mentioned above.
View the box plot.
,
[STAT PLOT]
Linear regression
Sample data
The following data is real. The percent of declared ethnic minority students at De Anza College for selected years from 1970 - 1995 was:
The independent variable is "Year," while the independent variable is "Student Ethnic Minority Percent."
Year
Student Ethnic Minority Percentage
1970
14.13
1973
12.27
1976
14.08
1979
18.16
1982
27.64
1983
28.72
1986
31.86
1989
33.14
1992
45.37
1995
53.1
Student ethnic minority percentage
By hand, verify the scatterplot above.
The TI-83 has a built-in linear regression feature, which allows the data to be edited.The x-values will be in
[L1]
; the y-values in
[L2]
.
To enter data and do linear regression:
ON Turns calculator on
Before accessing this program, be sure to turn off all plots.
Access graphing mode.
,
[STAT PLOT]
Turn off all plots.
,
Round to 3 decimal places. To do so:
Access the mode menu.
,
[STAT PLOT]
Navigate to
<Float>
and then to the right to
<3>
.
All numbers will be rounded to 3 decimal places until changed.
Enter statistics mode and clear lists
[L1]
and
[L2]
, as describe above.
,
Enter editing mode to insert values for x and y.
,
Enter each value. Press
to continue.
To display the correlation coefficient:
Access the catalog.
,
[CATALOG]
Arrow down and select
<DiagnosticOn>
... ,
,
$r$ and
$r^{2}$ will be displayed during regression calculations.
Access linear regression.
Select the form of
$y=a+bx$
,
The display will show:
Linreg
$y=a+bx$
$a=-3176.909$
$b=1.617$
$r^{2}=0.924$
$r=0.961$
This means the Line of Best Fit (Least Squares Line) is:
$y=-3176.909+1.617x$
$\mathrm{Percent}=-3176.909+1.617\mathrm{(year\; \#)}$ The correlation coefficient
$r=0.961$
To see the scatter plot:
Access graphing mode.
,
[STAT PLOT]
Select
<1:plot 1>
To access plotting - first graph.
Navigate and select
<ON>
to turn on Plot 1.
<ON>
Navigate to the first picture.
Select the scatter plot.
Navigate to
<Xlist>
If
[L1]
is not selected, press
,
[L1]
to select it.
Confirm that the data values are in
[L1]
.
<ON>
Navigate to
<Ylist>
Select that the frequencies are in
[L2]
.
,
[L2]
,
Go back to access other graphs.
,
[STAT PLOT]
Use the arrows to turn off the remaining plots.
Access
to set the graph parameters.
${X}_{\mathrm{min}}=1970$
${X}_{\mathrm{max}}=2000$
${X}_{\mathrm{scl}}=10$ (spacing of tick marks on x-axis)
${Y}_{\mathrm{min}}=-0.05$
${Y}_{\mathrm{max}}=60$
${Y}_{\mathrm{scl}}=10$ (spacing of tick marks on y-axis)
${X}_{\mathrm{res}}=1$
Be sure to deselect or clear all equations before graphing, using the instructions above.
Press
to see the scatter plot.
Questions & Answers
anyone know any internet site where one can find nanotechnology papers?
Introduction about quantum dots in nanotechnology
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
how to know photocatalytic properties of tio2 nanoparticles...what to do now
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
for screen printed electrodes ?
SUYASH
What is lattice structure?
of graphene you mean?
Ebrahim
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
what's the easiest and fastest way to the synthesize AgNP?
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials and their applications of sensors.
how did you get the value of 2000N.What calculations are needed to arrive at it
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Source:
OpenStax, Collaborative statistics for mt230. OpenStax CNX. Aug 18, 2011 Download for free at http://legacy.cnx.org/content/col11345/1.2
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