Home
Introductory statistics
Introductory statistics
Notes for the ti-83, 83+, 84,
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 window mode to set the graph parameters.
X
min
=
–2.5
X
max
=
3.5
X
s
c
l
=
1 (width of bars)
Y
min
=
0
Y
max
=
10
Y
s
c
l
=
1 (spacing of tick marks on
y -axis)
X
r
e
s
=
1
Access graphing mode 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:
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
The independent variable is "Year," while the independent variable is "Student Ethnic Minority Percent."
Student ethnic minority percentage
By hand, verify the scatterplot above.
Note
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.
Round to three 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 three decimal places until changed.
Enter statistics mode and clear lists
[L1]
and
[L2]
, as describe previously.
,
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 + 1.617
x
Percent = –3176.909 + 1.617 (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 window mode to set the graph parameters.
X
min
=
1970
X
max
=
2000
X
s
c
l
=
10 (spacing of tick marks on
x -axis)
Y
min
=
−
0.05
Y
max
=
60
Y
s
c
l
=
10 (spacing of tick marks on
y -axis)
X
r
e
s
=
1
Be sure to deselect or clear all equations before graphing, using the instructions above.
Press the graph button to see the scatter plot.
Questions & Answers
number of sport play by 50 student construct discrete data
width of the frangebany leaves on how to write a introduction
Solve the mean of variance
Step 1: Find the mean. To find the mean, add up all the scores, then divide them by the number of scores. ...
Step 2: Find each score's deviation from the mean. ...
Step 3: Square each deviation from the mean. ...
Step 4: Find the sum of squares. ...
Step 5: Divide the sum of squares by n – 1 or N.
kenneth
Is mistake done to something
Vutshila
What is the life teble
anas
statistics is the analyzing of data
how do you calculate mean
diveving the sum if all values
Shaynaynay
let A1,A2 and A3 events be independent,show that (A1)^c, (A2)^c and (A3)^c are independent?
data collected all over the world
Shaynaynay
construct a less than and more than table
The sample of 16 students is taken. The average age in the sample was 22 years with astandard deviation of 6 years. Construct a 95% confidence interval for the age of the population.
Bhartdarshan' is an internet-based travel agency wherein customer can see videos of the cities they plant to visit. The number of hits daily is a normally distributed random variable with a mean of 10,000 and a standard deviation of 2,400
a. what is the probability of getting more than 12,000 hits?
b. what is the probability of getting fewer than 9,000 hits?
Bhartdarshan'is an internet-based travel agency wherein customer can see videos of the cities they plan to visit. The number of hits daily is a normally distributed random variable with a mean of 10,000 and a standard deviation of 2,400.
a. What is the probability of getting more than 12,000 hits
Akshay
Sorry i want to learn more about this question
Bright
a= 0.20233
b=0.3384
Sufiyan
How do I interpret level of significance?
It depends on your business problem or in Machine Learning you could use ROC- AUC cruve to decide the threshold value
Shivam
how skewness and kurtosis are used in statistics
Source:
OpenStax, Introductory statistics. OpenStax CNX. May 06, 2016 Download for free at http://legacy.cnx.org/content/col11562/1.18
Google Play and the Google Play logo are trademarks of Google Inc.