**Steps to follow to find the mean
and standard deviations of a frequency table (or individual data).**

**1. ON**

**2. 2nd**

**3. MATRIX (to get into STAT mode)**

**4. > > (cursor over twice
using arrow keys to DATA)**

**5. 2 (CLRSTAT:
clears any previous data; THIS IS A VERY IMPORTANT
STEP which must be completed every time you start with new data.)**

**6. ENTER (on home screen now)**

**7. Repeat steps 2 through 4 to get back to DATA in
STAT mode**

**8. ENTER (#1: to get to EDIT screen
to input data values**

** y's are the frequencies of each
value; leave as 1 if individual data)**

**10. Put the frequency in for the y's and press ENTER
after each one**

**Once ALL the data values and frequencies are in, DO
THE FOLLOWING:**

**11. 2nd**

**12. MATRIX**

**13. ENTER (#1 is 1-variable statistics
you want to compute)**

**14. ENTER (on the home screen now; you
will get the mean and standard
deviations for the data)**

**Steps to follow to find the linear
correlation coefficient and the linear regression equation.**

**1. Input the paired data following
steps #1 - 10 above. The x-value will be the first of the 'paired' values
in the number pair (instead of the class mark or individual data value)
and the y-value will be the second of the 'paired' values in the number
pair (instead of the frequency).**

**2. 2nd**

**3. STAT**

**4. Press 2 (LinReg; puts
you on the home screen)**

**5. ENTER (computes the
linear regression equation y = bx + a**

**Steps to follow to find the mean
and the standard deviations of a frequency table or individual data.**

**1. ON**

**2. STAT**

**3. > (arrow right one time
to get to CALC)**

**4. 3 , then ENTER (for SET-UP)**

**5. Under 1-Var Stats**

**7. ENTER (#1 EDIT... puts you on
the list screen)**

**8. If data appears in L1 and/or L2 columns, do the
following:**

**Complete the same for the L2 column.**

**10. Input the corresponding frequencies in L2,
pressing ENTER after each value**

**IMPORTANT!! The TI-82 will NOT
allow a frequency of more than 99.**

**Therefore, if you have a frequency,
for example, of 104, you would have to put the data value in the L1 column
TWICE - once with a frequency of 99 and again with a frequency of 5 - to
give you a total of 104 of that data value.**

**12. > (arrow right one time
to CALC)**

**13. ENTER (#1 is the 1-VAR STATS
you want to compute)**

**14. ENTER (on the home screen now;
the mean and standard deviations will be computed for the frequency table
or individual data values)**

**Steps to follow to find the linear
correlation coefficient and the linear regression equation.**

**1. ON**

**2. STAT**

**3. > (arrow right one time
to get to CALC)**

**4. 3 , then ENTER (for SET-UP)**

**5. Under 2-Var Stats**

**Ylist: highlight L2**

**(Each of these is the calculator's default settings
and will already be highlighted unless previously changed.)**

**7. In L1 input the first value of the paired data (usually
called the x-value)**

**8. In L2 input the second values of the paired data
(usually called the y-value)**

**10. > (arrow right once to CALC)**

**11. Press 5 (chooses LinReg (ax+b); puts
you on the home screen)**

**12. ENTER (computes the linear regression
equation y = ax + b
and the linear correlation coefficient value r.**

**Steps to follow to find the mean
and the standard deviations of a frequency table or individual data.**

**1. ON**

**2. STAT**

**3. ENTER (#1 Edit... will put you
on the List Screen)**

**4. If data appears in L1 and/or L2 columns, do the
following:**

**Complete the same for the L2 column.**

**6. Input the corresponding frequencies in L2,
pressing ENTER after each one (use a '1' if you have individual data
values)**

**7. STAT**

**8. > (arrow right one time to CALC)**

**9. ENTER (#1 is the 1-VAR STATS you
want to compute)**

**10. You should be on the home screen now with
'1-Var Stats' on a line by itself.**

**The home screen line should now have: 1-Var Stats
L1,L2**

**(the 2 will be on the next line;
that's OK)**

**THIS IS A VERY IMPORTANT STEP!**

**Steps to follow to find the linear
correlation coefficient and the linear regression equation.**

**1. Press 2nd
then Catalog (the '0' key)**

**2. Arrow down until arrow is
next to DiagnosticOn**

**3. Press Enter
then Enter again. Homescreen should
say**

** DiagnosticOn**

**
Done**

**4. Follow steps #1 - 4 above
to clear any previous data in the L1 and L2 columns**

**5. In L1, input the first value of the paired data
(usually called the x-value)**

**6. In L2, input the second values of the paired data
(usually called the y-value)**

**8. > (arrow right once to CALC)**

**9. Press 4 (chooses LinReg (ax+b); puts
you on the home screen)**

**10. ENTER (computes the linear regression
equation y = ax + b
and the linear correlation coefficient value r.**

**Steps to follow to find the mean
and the standard deviations of a frequency table or individual data.**

**1. ON**

**2. STAT**

**3. F2 (for EDIT)**

**4. F3 (to give xlist NAME = L1)**

**5. ENTER**

**6. F4 (to give ylist NAME = L2)**

**7. ENTER**

**8. F5 (to clear any past stat values)**

**9. Input first class mark (class midpoint) for x _{1
},then
press ENTER**

**10. Input first class frequency for y _{1
},then
press ENTER**

**11. Repeat steps 9 and 10 until all values have been
entered.**

**12. 2ND**

**13. F1 (for calc mode)**

**14. ENTER**

**15. ENTER**

**16. F1 (for 1-VAR; mean and standard deviations
will be computed)**

**Steps to follow to find the linear
correlation coefficient and the linear regression equation.**

**1. Follow Steps #1-15 above (The x-values will be the
first number of the data pairs; the y-values will be the second number
of the data pairs.)**

**2. Press F2 (for LINR - linear
regression - computations)**

**(Do NOT confuse this with
F3 - LNR - which is the logarithmic regression command)**

**The values given will be the components of the equation:
y
= bx + a (where 'b' is the slope of the equation and
'a' is the y-intercept of the equation)**

**The linear correlation coefficient is the value stated
for 'corr'.**

**1. ON**

**2. To SET UP THE CUSTOM MENU, do the following:**

**a) Press the yellow 2nd
key, then CUSTOM (to access the CATLG-VARS menu)**

**b) Press MORE, MORE (STAT should
be above F4)**

**c) Press F4 (to access statistical commands)**

**d) Arrow down until xStat
has the arrow beside it.**

**e) Press F3 (CUSTM: to place the sStat
command in your CUSTOM list)**

**f) Your CUSTOM list should be up now (places to store
commands you need to use often); Press the position (F1, F2, etc.) where
you want to store the xStat command.**

**g) Arrow up to fStat
in the statistical commands list**

**h) Press the position where you want to store this
command (F1, F2, etc.) in the CUSTOM list.**

**i) Arrow down to yStat
in the statistical list**

**j) Press the position where you want to store this
command (F1,F2, etc.) in your CUSTOM list.**

**YOU SHOULD NOW HAVE THE THREE STATISTICAL COMMANDS:**

**xStat fStat
yStat IN YOUR CUSTOM
LIST.**

**You will not have to complete these first two steps
ever again, unless your calculator is reset to the default settings, batteries
run down, etc.**

***Press 2nd EXIT (Quit) to get out of the Catalog-Vars
menu.***

**3. Press the yellow 2nd
key.**

**4. Press the + key.
(to access the STAT mode)**

**5. F2 (to access the EDIT menu)**

**6. If your xStat, yStat, and fStat lists have values
already in them, you should delete those values before you begin a new
problem. Arrow to the top of the list until the heading of the list is
highlighted, press CLEAR , then ENTER.**

**7. Input your class marks (class midpoints) or individual
data values in the xStat list (first column), pressing ENTER after each.**

**8. Input the FREQUENCY of each data value in the fStat
list (3rd column !!). You can input a '1' if you have individual data values.
(There are other ways to handle this, but to keep the following directions
simple, we will go this route.)**

**9. EXIT (THIS
IS A VERY IMPORTANT STEP!!)**

**10. Press 2nd, then
+ (to access the STAT menu again)**

**11. F1 (to access the
CALC menu)**

**12. F1 (again, to access the
OneVa - one variable command)**

**13. Press CUSTOM**

**14. Press the position (F1, F2, etc.) where you
have the xStat command stored.**

**15. Press the comma key (,)**

**16. Press the position (F1, F2, etc.) where you
have the fStat
command stored.**

**17. (The home screen line should now read:
OneVar xStat,fStat ) Press ENTER**

**The screen should now show the mean, standard deviations,
and other statistical values.**

**Steps to follow to find the linear
correlation coefficient and the linear regression equation.**

**1. If you have not previously set up the CUSTOM menu,
follow steps #1 and 2 above.**

**2. Follow steps #3 - 6 above.**

**3. Input the first value of each data pair in the xStat
list, pressing ENTER after each.**

**4. Input the second value of each data pair in the
yStat
list, pressing ENTER after each. (Make sure each number pair is
correctly placed on the same line. )**

**5. EXIT (THIS IS
A VERY IMPORTANT STEP!!)**

**6. Press 2nd, then
+ (to access the STAT menu again)**

**11. F1 (to access the
CALC menu)**

**12. F3 (to access the
LinR- linear regression - command;**

**(Do NOT confuse this with
F4 - LnR - which is the logarithmic regression command)**

**13. Press CUSTOM**

**14. Press the position (F1, F2, etc.) where you
have the xStat command stored.**

**15. Press the comma key (,)**

**16. Press the position (F1, F2, etc.) where you
have the yStat
command stored.**

**17. (The home screen line should now read:
LinR xStat,yStat ) Press ENTER**

**The home screen should now have the linear regresssion
equation components:**

**y = a + bx (where
'a' is the y-intercept and 'b' is the slope). The linear correlation coefficient
is the value stated for 'corr'.**

**1. AC**

**2. MODE**

**3. X (the times - muliplication
- sign)**

**You are now ready to input your
data by:**

**4. F2 (for edit)**

**5. F3 (to erase any previous data)**

**{F1 puts the data into a frequency
table that you cannot see yet.}**

**Repeat step 6 until all data
values are in.**

**7. F2 (to review
data)**

**8. PRE (goes back
to PREvious screen)**

**9. F4 (press
the appropriate key for the mean or standard deviation)**

**10. EXE**

**To go back to computational mode:
1. MODE**

**Steps to follow to find the linear
correlation coefficient and the linear regression equation.**

**1. AC**

**2. Press 3**

**3. Go to the Set Up by pressing:
SHIFT and MENU**

** The display should look
like the following: GRAPH TYPE: REC**

** STAT DATA:
STO**

** STAT GRAPH:
NON-**

** M-DISP/COPY:
M-DP**

**4. EXIT (The next display just
indicates what you have in your set up.)**

**You are now ready to input you
data by:**

**5. F2 (for edit)**

**6. F3 (to erase any previous data)**

**{F1 puts the data into a frequency
table that you cannot see yet.}**

**Repeat step 7 until all data
values are in.**

**8. F2 (to review
data)**

**9. EXIT (goes back
to previous screen)**

**10. F4 (press
the appropriate key for the mean or standard deviation)**

**11. EXE**

**To go back to computational mode:
1. MENU**

** 3. EXE**

**Steps to follow to find the linear
correlation coefficient and the linear regression equation.**

**1. AC**

**2. Press 4**

**3. Go to SET UP by either
pushing F6 (if you see SET in the lower right hand corner of the screen)
or by SHIFT and MENU. Make the display look like the following:**

** The display should look
like the following: GRAPH TYPE: REC
[F1]**

** STAT DATA:
STO [F1]**

** STAT GRAPH:
NON- [F2]**

** REG MODEL:
LIN [F1]**

** M-DISP/COPY:
M-DP [F1]**

**4. EXIT**

**You are now ready to input you
data by:**

**5. F2 (for edit)**

**6. F3 (to erase any previous data)**

**Repeat step 7 until all data
values are in.**

**8. [F6] REG
To find the linear regression equation**

**9. [F1] [EXE]
"A" value**

**10. [F2] [EXE]
"B" value**

**These values give you the equation:
y = "B"x + "A" Remember this!**

**11. [F3] [EXE]
r value (correlation coefficient)**

**To check the values you have
entered, press [EXIT] once, then [F2] for edit.**

**
The value that is highlighted will delete the whole row.**

**[F2] INS
You can insert data value(s) that you might have omitted by pressing**

**To input a new data set, go back
to step 5.**

**1. AC/ON**

**2. Press 3**

**3. Go to SET UP by either pushing F6 (if you see SET
in the lower right hand corner of the screen) or by SHIFT and MENU. Make
the display look like the following:**

**S-graph: NON-**

**G-type: REC/CON**

**Angle: Deg**

**Display: Nrml or Nrm2**

**M-D/Cpy: M-Disp**

**4. EXIT (The next display just
indicates what you have in your set up.)**

**You are now ready to input you
data by:**

**5. F2 (for edit)**

**6. F3 (to erase any previous data)**

**{F1 puts the data into a frequency
table that you cannot see yet.}**

**Repeat step 7 until all data
values are in.**

**8. F2 (to review
data)**

**9. EXIT (goes back
to previous screen)**

**10. F4 (press
the appropriate key for the mean or standard deviation)**

**11. EXE**

**To go back to computational mode:
1. MENU**

** 3. EXE**

**Steps to follow to find the linear
correlation coefficient and the linear regression equation.**

**1. AC/ON**

**2. Press 4**

**3. Go to SET UP by either pushing F6 (if you see SET
in the lower right hand corner of the screen) or by SHIFT and MENU. Make
the display look like the following:**

**S-data: STO
[F1]**

**S-graph: NON- [F2]**

**S-plot: Blue
[F1]**

**G-type: REC/PLT [F6]**

**Angle: Deg
[F1]**

**Display: Nrm2 [F3] twice**

**4. EXIT (The next display just
indicates what you have in your set up.)**

**You are now ready to input you
data by:**

**5. F2 (for edit)**

**6. F3 (to erase any previous data)**

**{F1 puts the data into a table
that you cannot see yet.}**

**Repeat step 7 until all data
values are in.**

**8. [F6] REG
To find the linear regression equation**

**9. [F1] [EXE]
"A" value**

**10. [F2] [EXE]
"B" value**

**These values give you the equation:
y = "B"x + "A" Remember this!**

**11. [F3] [EXE]
r value (correlation coefficient)**

**To check the values you have
entered, press [EXIT] once, then [F2] for edit.**

**
The value that is highlighted will delete the whole row.**

**[F2] INS
You can insert data value(s) that you might have omitted by pressing**

**To input a new data set, go back
to step 5.**

**1. AC/ON**

**2. Press 2**

**Graph Func: On**

**Background: None**

**Plot/Line: Blue**

**Angle: Deg**

**Coord: On**

**Grid: Off**

**Axes: On**

**Label: On**

**Display: Norml**

**4. EXIT**

**You are now ready to input your
data by:**

**5. > (arrow right once) Get to DEL-A at
F4 and use to clear any data values.This will only clear data values in
the highlighted column.**

**6. Put in all your data values or class marks (class
midpoints) in LIST 1 by pressing EXE after each entry.**

**7. > (arrow right once)**

**8. In LIST 2 input the frequency, pressing EXE after
each entry.**

**9. After all values have put in, press the right arrow
key (>) until you see CALC which should be right above F2. Press F2 and
then F1 for 1VAR. This will give you the mean, standard deviation, and
more information if you cursor down.**

**10. To put in different data sets, press EXIT twice
until you get back to the right arrow that is over F6. Begin with step
5 above.**

**To go back to computational mode:
1. MENU**

** 3. EXE**

**Steps to follow to find the linear
correlation coefficient and the linear regression equation.**

**1. AC/ON**

**2. Press 2**

**Graph Func: On**

**Background: None**

**Plot/Line: Blue**

**Angle: Deg**

**Coord: On**

**Grid: Off**

**Axes: On**

**Label: On**

**Display: Norml**

**4. EXIT**

**You are now ready to input your
data by:**

**5. > (arrow right once) Get to DEL-A at
F4 and use to clear any data values.This will only clear data values in
the highlighted column.**

**6. Put in all your x-values in LIST 1 by pressing EXE
after each entry.**

**7. > (arrow right once)**

**8. In LIST 2 input the y-values, pressing EXE after
each entry.**

**9. After all values have put in, press the right arrow
key (>) until you see CALC which should be right above F2. Press F2 and
then F3 for REG. This will give you another menu. For linear regression,
press [F1] key {X} and you should have the following display.**

**DISPLAY LinearReg**

**
a =**

**
b =**

**
r =**

**
y = ax + b**

**10. To put in different data sets, press EXIT twice
until you get back to the right arrow that is over F6. Begin with step
5 above.**

**To go back to computational mode:
1. MENU**

** 3. EXE**

**Thanks for Professor Brenda Ammons for assistance in
developing this website.**

Revised: November 21, 2002

- cbs