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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
I'm interested in biological psychology and cognitive psychology
what does preconceived mean
How can I develope my cognitive domain
why is communication effective
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
please i need answer
Wekolamo
because it helps many people around the world to understand how to interact with other people and understand them well, for example at work (job).
Agreed 👍 There are many parts of our brains and behaviors, we really need to get to know. Blessings for everyone and happy Sunday!
ARC
A child is a member of community not society elucidate ?
Isn't practices worldwide, be it psychology, be it science. isn't much just a false belief of control over something the mind cannot truly comprehend?
compare and contrast skinner's perspective on personality development on freud
Skinner skipped the whole unconscious phenomenon and rather emphasized on classical conditioning
war
explain how nature and nurture affect the development and later the productivity of an individual.
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
and having a good philosophy of the world is like a sandwich and a peanut butter 👍
Jonathan
generally amnesi how long yrs memory loss
interpersonal relationships
What would be the best educational aid(s) for gifted kids/savants?
treat them normal, if they want help then give them.
that will make everyone happy
Saurabh
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Source:
OpenStax, Introductory statistics. OpenStax CNX. May 06, 2016 Download for free at http://legacy.cnx.org/content/col11562/1.18
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