MATH 120 : Elementary Statistics : Spring 2022
(3 credits)
MWF 9-9:50 am, CST 103
Instructor
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Office hours
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The following hours are tentative -
I'll finalize office hours
after the 1st week
M: 10-11am. T: 10-11am. W: 10-11am.
And by appointment or walk-in.
The best way to contact me, in order of
preference, is: [1] in person,
[2] by email, [3] by phone.
Open door policy:
I keep my posted office hours to
a bare minimum, to avoid being locked into a rigid schedule
all semester. However, I am happy to assist students well
beyond my office hours. Students are encouraged to just
drop by whenever needed.
Anytime my
office door is open you're welcome to stop by and check whether
I am available.
Also, please do not hesitate to make an appointment
if my posted office hours don't work for you.
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Class website |
https://cs.earlham.edu/~pardhan/courses/statistics/
The website is a central component of this
class, and you are responsible for regularly checking it for
announcements, homework assignments and various
supplementary handouts. I prepare for class with the assumption
that students have reviewed the website and followed through on
posted instructions.
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A
note of welcome
It is my pleasure to welcome
you to this class! Statistics is, hands down, among the most
versatile and practically useful disciplines in the world.
Whether you plan to be a scientist, economist, artist,
entrepreneur, political activist, or homemaker,
there is guaranteed to be a way for you to benefit from
the use of statistical methods. You may well find that the
skills you pick up in this class will be of value long after you
graduate, in everyday life and in your profession.
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A
word of caution
Many students take this course with
misguided perceptions about how much time, effort and work it
involves. Perhaps the course-title, with the
word "Elementary" in it, is part of the culprit!
To set the record straight, this class covers a vast range
of materials, and is fairly challenging if a student doesn't
devote adequate
time to it. Please be advised that failure and dropout
rates in this class tend to be high.
For further details and individual guidance, students are welcome
to visit the instructor.
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Textbook
Introductory statistics,
by Barbara Illowsky, Susan Dean,
and openstax.org.
Digital edition ISBN13 = 978-1-947172-05-0;
Paperback ISBN13 = 978-1-50669-823-6
Aditional supplementary material
will be provided by the instructor for some topics.
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Course
credits
This course is worth 3 credits, and
will meet 3 times per week for 50-minute in-person
classes.
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Requirements this class fulfills
Several Earlham majors and programs
recommend or require students to take this class.
These include: Biology, Biochemistry, Chemistry,
Data Science,
Exercise Science, Global Management, Neuroscience.
In addition, this class fulfills the Quantitative Reasoning
component of Earlham's General Education requirements.
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Description & objectives
The broad goal of this
course is to introduce students to the foundational
principles and practical methods of doing
statistical analysis. More specifically, this
course will teach you fundamental statistical
concepts and techniques for organizing, analyzing, and interpreting
data, as well as for other common statistical tasks such as
correlation & regression, experimental design,
probability, hypothesis testing and statistical inference.
In addition, this course will introduce students to
use the R software package for doing statistics.
We will cover most topics in Chapters 1-12 of
the textbook.
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Student
learning goals and outcomes
Upon successful completion of this
course, students will be able to
- Organize, summarize and interpret data.
- Use technology tools to analyze data.
- Design and conduct a basic statistical research study.
- Understand fundamental probability concepts.
- Infer statistically valid conclusions using confidence
intervals and hypothesis tests.
- Interpret and communicate the findings of their analyses.
- Strengthen logical reasoning, and quantitative skills.
- Use statistics to structure their understanding of
the world around them, and to investigate interesting questions.
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These aspirations broadly support all
5 learning goals of the Math Department, and the 7 goals
of an Earlham education (see the
Appendix attached
to this Syllabus).
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Course
prerequisites
High-school algebra, and a score
of at least 50 on Earlham's
Quantitative Skills Assessment (QANS).
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Assessment &
grading policy
In my approach to grading, correct process and
method receive far more credit than correct answers.
I always ask you to show all
your work, and I grade all of your work!
Your final grade will be based on combined
performance on: (1) quizzes, (2) two in-class exams,
(3) a comprehensive final exam, (4) a term project,
(5) homework problems, (6) classwork and labs.
Each will contribute the following proportions:
Quizzes | 20% |
Two in-class exams | 15% + 15% |
Final exam | 15% |
Homework | 15% |
Classwork and labs | 20% |
Letter grade boundaries for this course
are not set in advance.
They will be determined at the end of
the semester based on factors such as overall class
performance, level of difficulty of tests, quizzes, and assigned
work, etc.
At a minimum, the following standard scale
for letter grades will be honored:
A+: 97.0-100; A: 93.0-96.9; A-: 90.0-92.9;
B+: 87.0-89.9; B: 83.0-86.9; B-: 80.0-82.9;
C+: 77.0-79.9; C: 73.0-76.9; C-: 70.0-72.9;
D+: 67.0-69.9; D: 63.0-66.9; D-: 60.0-62.9;
F: below 60.
NOTE that all students must also satisfy the
following minimum requirements to receive a grade of C- or better:
* Take at least 75% of the quizzes.
* Take all the exams (2 during the semester, plus the final).
* Turn in at least 75% of the homework, classwork and
labs.
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More details
about assessment categories
Quizzes:
There will be frequent short quizzes
based on readings, homework, classwork and/or other assigned
tasks. The primary purpose of quizzes is to encourage regular
and timely engagement with the materials, and to
provide continuous assessment of your work.
The quizzes will help us accomplish most of the
learning goals listed above.
Classwork and labs:
Classwork will be similar to doing
homework problems, and will serve
the purpose of hands on learning and practice in class. This
will support all the learning goals listed above.
The primary purpose of labs will be to learn how to do
statistical analysis using the R software package. This
will help us accomplish learning goals 1, 2 and 5, in
particular.
Homework:
The purpose of homework problems is to build skills
in the material.
Exercises will be assigned from the textbook and other
sources at various points throughout the semester.
These must be turned in at the beginning of class on the
indicated due dates. Homework exercises
will help us accomplish most learning goals listed above.
Exams:
There will be two exams during the semester, plus a
final exam at the end of the semester. The tentative dates
of the mid-semester exams are:
Exam 1: March 2.
Exam 2: April 13.
The final exam date and time is set by the
registrar's office.
According to their calendar, the final exam
will be held
Monday, May 16, in CST 103 at 8 am.
The final exam date and time is not negotiable.
Please arrange any travel plans accordingly.
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Important dates
* Last day to add this
course: February 4.
* Last day to drop: April 15.
* Date of final exam: May 16.
NOTE: Last drop date applies to Earlham students only.
Students cross-registered through IU-East or other institutions must
follow the dates and rules of their own institution.
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Academic integrity
After several years of writing standard,
boiler-plate stuff in this section, I have decided to replace it with
a more authentic message from my heart to yours. Before getting
into details, I would like to share 3 key ideas that profoundly
shape my thinking, and prompt me to explore more effective ways
towards academic integrity:
- Academic infractions are a much bigger problem at
Earlham than many of us would like to believe or admit.
- The problem is NOT our students!
Earlham students are as good (or better!) than their peers at
other institutions in terms of moral values and ethical standards.
- Infractions at Earlham can be significantly reduced using
a combination of strategies, collectively developed by students
and faculty.
These three points summarize my overall perspective, and
will frame the rest of my discussion on this subject.
By far the
single biggest phenomenon that has radically transformed today's
academic integrity / infraction landscape is technology --
particularly the internet and cell phones.
In my view, Earlham's
traditional approach to academic integrity has been rendered
completely obsolete by these technologies. If I were an Earlham
student today, I would encounter many situations where the
temptation to infract would be extremely high, because these
technologies make it so easy, and the risk of getting caught is
virtually zero.
This is the main reason why I say that you, the
student, are not the problem. You are human, just like me
and my faculty colleagues. It is a fact of life that many humans
succumb to temptation when the rewards are sufficiently high,
and the risks sufficiently low.
Yet, the fact remains, a growing rate of
academic infractions is a terrible thing
to ignore: They sink an institution's reputation, decrease the
value of students' education, lower student & faculty
morale, and more. Clearly, we need to explore and develop
new strategies that are more effective for our times, and also
preserve Earlham's distinctive approach to such matters. We
will set aside some class time to discuss and formulate
specific policies for helping students (joyfully!) meet and exceed
the highest standards of integrity in this class. In the meantime,
I invite you to reflect on some practical ways that would most
help and support you in avoiding the use of inappropriate
sources for completing and turning in your graded work.
I would like to conclude with the following excerpt
from the Earlham Academic Integrity Policy:
"The College trusts students who enroll
at Earlham to be
honest seekers of truth and knowledge. This trust is extended to
all students by other students and by teachers ...
Giving or receiving aid inappropriately on
assignments and tests, or plagiarizing by using another person's
words or ideas without credit, constitutes a serious breach of our
trust in one another and in the integrity of the search for truth.
Those who believe they have witnessed violations of academic
integrity should feel the obligation to speak about this to the
suspected offender. The witness also should feel obligated to
report the suspected offender to the instructor if the person
fails to offer a satisfactory explanation and refuses to report
him or herself. ...
Violations of academic integrity, because they undermine our
trust in one another and in the credibility of the academic
enterprise, are taken very seriously. Penalties for violations
range from failing assignments or tests to suspension or expulsion
from the College.
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Makeups
In-class items: There will be no makeup for missed
in-class items (e.g., quizzes, classwork, class participation,
etc.) regardless of reason. I will drop your lowest two scores
as an implicit way of making up for missed items.
Homework: Past-due assignments will not be
accepted except in rare circumstances, provided the student
receives prior consent from the instructor.
Exams: Make-up exams will not be given
except in cases of documented illness or emergency.
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Academic accommodations
Students with a documented disability
(e.g., physical, learning, psychiatric, visual, hearing, etc.)
who need to arrange reasonable
classroom accommodations must request accommodation memos
from the Academic Enrichment Center (main floor of Lilly
Library) and contact their instructors each
semester. For greater success, students are strongly encouraged
to visit the Academic Enrichment Center within the first two weeks
of each semester to begin the process. For further details, please visit
https://earlham.edu/academics/academic-support-and-special-programs/academic-enrichment-center/accessibility-services/
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Other sources of help
- The Academic Enrichment Center:
The Academic Enrichment Center (AEC), located in
Lilly Library,
provides assistance with study habits and skills as well
as a peer tutoring service. The AEC is staffed by trained
peer tutors for either pre-arranged group tutoring sessions
(provided for many math, science and social science
courses) or one-on-one tutoring sessions for other
courses. Peer tutoring is a free service offered to all
Earlham students. Please visit
https://earlham.edu/academics/academic-support-and-special-programs/academic-enrichment-center/peer-tutoring/
for more information.
- The Earlham Writing Center:
The Writing Center is dedicated to providing students
with advice and resources about writing. Students can meet
one-on-one with trained consultants who will contribute feedback
to writers at any stage of the writing process: brainstorming,
drafting, researching, revising, and polishing. This is a free, walk-in
service on the main level of Lilly Library.
In addition to dropping by, students may
also schedule an appointment in advance
using the online scheduler found at:
http://www.earlham.edu/writing-center/.
Also, if you want help with specific grammar topics related
to your own writing,
https://www.grammarly.com/edu is available
for all Earlham students to proofread their papers and learn
more about grammatical errors.
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