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Hector Plotquin

Pre - Statistics: A Pathway to Elementary Statistics

Class Schedule & Dates

Pre-Statistics is a beginner course in statistics. The course covers the basics of every statistical study; you will design statistical experiments, collect and organize data, arrange the data on tables and charts, analyze the data, and draw conclusions. These require computational aptitude, so the course also covers fractions, proportions, percents, ratios, and solving equations and inequalities. You will practice a variety of visual representations of data as well: histograms and data charts, boxplots, dotplots, and scatterplots.

You will learn something new with every unit. This course is good for anyone who would like understand the statistical studies, charts and graphs published on the media.This class has no transferability to the University of California and California State University systems (UC:CSU) but the next course in line Math 227 Elementary statistics does.

Class Meeting Times Spring 2019: Monday, Tuesday, Wednesday,Thursday 9:35-10:45 am
Class Section Numbers Fall 2018: 22113

Lehmann coverCurrent Textbook Recomended: Jay Lehmann: A Pathway to Elementary Statistics 2017 edition - ISBN: 978-0-452-29728-9; Copies of textbook are available in the LACC Library;

About This Class
  • This course is required of all non-STEM majors - open to all other interested students. This is a lecture-lab class with "hands-on" work in class. This is a preliminary course to Math 227 Elementary Statistics which is a transfer course. Students do not earn academic units for this class but they earn the units in Math 227.
  • The course will be lectures with audio-visual materials. Prerequisite: Math 110 or Math 112 or equivalent. Your basic math comprehension should be strong, as you will be doing algebraic calculations involving fractions and decimals. This website has a study guide, not the actual notes.
  • In the event of serious illness or other circumstances beyond a student's control a student must notify the instructor by email or telephone to keep from being dropped. A later meeting can determine if too much work or information has been missed to continue the class. According to LACC procedure a student can be excluded after 5 unexcused absences from this class. It is the student's responsibility to sign the roll sheet for each class meeting - if you do not sign, you will be counted absent. Each week, one unexcused absence counts off ten points and an excused absence (teacher notified) counts off five points. One class absence per semester is given with no points removed.
  • If a student stops attending a class it is the student's responsibility to officially drop the class in order not to receive a failing grade at the end of the semester (can be done through the Online system). Disruptive behavior can result in the expulsion of the student from class. Consult the current Calendar for its information concerning Holidays, Drop Dates, Registration, etc. It is the students responsibility to follow those dates see next paragraph.
  • Important! Drop Date Information. The deadline to drop without a “W” is the first day of Week 3 (of the semester), OR Monday, February 18 for Spring 2019. If you must drop a course, drop before the specified deadline for dropping a class without a grade of "W." Dropping after Week 2 will result in a “W” on your transcript. Effective July 1, 2012 students will only have 3 attempts to pass a class. If a student gets a "W" or grade of "D", "F", “I”, or "NP" in a class, that will count as an attempt. A student's past record of course attempts district wide will also be considered. Therefore, before the end of Week 2 you should carefully consider if you can reasonably manage this course with the other factors in your life (e.g. work, family, course load). If you think you will not be able to complete this course with a C or better, drop by this date: Sunday, May 5 for Spring 2019. This is the last day to drop WITH a "W" grade. If you have any questions, email the teacher before that date. You may also see a counselor in the Counseling Center in the new LACC Student Services Building.

There will be five TESTS, weekly QUIZZES, weekly HOMEWORK, and a comprehensive and mandatory FINAL EXAM. The lowest test score will be replaced by your final exam score if it is higher than your test score.

           GRADING                                                            SCALE

Tests                            35 %                                 90% - 100%                    A
Homework                     15 %                                 80% - 89.9%                   B
Quizzes                         15 %                                 70% - 79.9%                   C
Final Exam                     20 %                                 60% - 69.9%                   D
Participation                    5 %                                 0% - 59.9%                     F
Total                            100 %                                

All five tests Must be Taken to Pass This Course. There will be no make-up exams. The exams will have 10 questions similar to the homework and quiz questions. You will need a large a exam book available at the  LACC Bookstore and a scientific calculator. Each test can only be taken once. All exams are non cumulative and will include questions on lecture and textbook material. There may be extra credit assignments. The final examination is comprehensive. The Final Exam date is Monday, June 3 from 10:15 am to 12:15 pm.

  • Exam#1    Chapter 2 and Lecture (Textbook same chapter)               100 points
  • Exam#2    Chapters 2 and 3 and lecture (Textbook same chapters)     100 points
  • Exam#3    Chapter 4 and lecture (Textbook same chapter)                100 points
  • Exam#4    Chapters 6 and 7 and Lecture (Textbook same chapters)    100 points
  • Exam#5    Chapters 8 and 9 and lecture (Textbook same chapters)     100 points
  • Final Exam Chapters 1, 2, 3, 4, 6, 7, 8, 9 and lecture                        100 points 


Letter Grades / Course Points
A    650 - 550 points
B    549 - 400 points
C    399 - 350 points
D    349 - 300 points
F    299 - 000 points


  • E-textbook: A Pathway to Elementary Statistics by Jay Lehmann
  • MYMATHLAB Access Code: You can purchase an access code online at A free temporary access code good for two weeks is available. You can get it at the Mymathlab website. If you buy a new book at the LACC bookstore, the access code is packaged free.


  • The key to learn math is to generate and answer questions. Read your notes and make a list of specific questions to ask in class; I will schedule time for questions and answers at the beginning of each class meeting. Plan on spending at least one to two hours per class meeting doing homework, studying the text, and reviewing your lecture notes; keep a list of the points you don't understand and write down questions; be sure you get answers to those questions in class or using the campus resources available.
  • Videos for every lesson are on the Mymathlab website. To watch a video lesson, login to Mymathlab and select Multimedia Library. There are videos for each section of the textbook. Video lessons are available all semester long. You are also encouraged to take notes from the video lessons. Use the video notebook pages found on the link below the Video Lessons.
  • Notes for every lesson are on the Mymathlab website. To work on class notes, select Video Notebook from Multimedia Library There are notes for each chapter of the textbook. Select the chapter you want; a PDF file appears with exercises for each portion of the corresponding video. Print the notes file and write the notes and examples out in your own style. Continue taking notes in class as the lesson is given and more examples are presented.
  • Enroll in Math 100 to use the π shop, FH 104, for one-on-one tutoring.
  • Drop in to the Learning Resource Center for tutoring.
  • Form a study group with two or three classmates and meet several times a week or on weekends in the LACC Library's quiet study rooms.
  • Ask me questions and ask your classmates as well.
Pre-Statistics Student Learning Outcomes:
  1. The student will construct and interpret graphical and tabular displays of data.
  2. The student will graph and interpret linear models.

The time I have set for each chapter and schedule of tests is tentative and may change. Changes to the schedule may be made if and when necessary. I will announce any changes in class and it is your responsibility to keep abreast of them.

  • Homework will be assigned on a weekly basis. You will find the MMLH assignments on the Internet at the Mymathlab website. Each MMLH assignment corresponds with the section lesson; work each exercise on paper and input your answer into Mymathlab.
  • Each homework assignment will stay posted for one week only for you to complete it within that week. Each MMLH assignment is posted on Monday and is available until Sunday at 11:59 pm. All MMLH assignments are to be completed by 11:59 pm on their due date. You are encouraged to take notes from the video lesson and start on the homework as soon as it becomes available.  MMLH assignments are reopened for reviewing one week before the test that covers those lessons. Homework assignments due dates are listed on the Mymathlab website.
  • There is a Mymathlab Quiz (MMLQ) assigned each week. The quizzes give you more practice with the objectives taught during the week. The quizzes also give you practice working problems without knowing if the answers are correct; in other words, taking a quiz is training you for taking the test.
  • Each quiz contains ten selected questions from the sections covered during the week. Each quiz becomes available on Monday and is available until Sunday at 11:59 pm. Each quiz may be taken/retaken up to five (5) times to improve your score until 11:59 pm on the following Sunday. Check quiz due dates on the Mymathlab website.
  • Work each quiz exercise on paper and input your answer into Mymathlab.
  • There are 5 major tests (MMLT) during the semester. There are no makeup tests. Consult the class Calendar for test dates.
  • Tests will be taken in the computer lab on the Mymathlab website. Show up to the testing room 15 minutes early on test day. Use the entire class time to work on the test problems. If you finish early, rework test problems and check answers for possible errors. Plan on staying 15 more minutes after the normal class time ends; you will be given as much extra time as is feasible.
  • Number the blue book pages. Question 1 will be worked and answered on page 1, question 2 on Page 2, etc. During the test, each question has its own page. Write each test problem on the appropriate page of the blue book. Blue books with missing or torn pages will not be accepted.
  • Work the test problem in the blue book showing all necessary steps. No points will be given for just an answer. NO WORK SHOWN, NO POINTS EARNED. Only your work will be gradedYou must show work leading to the solution or else you will lose all points for that question.
  • For word problems, write down all formulas used to solve them. It is not necessary to write down the entire question on paper, display the information on a table instead.
  • For graphs on the x-y-axis, draw them in the blue book as well as in Mymathlab.
  • The final answer for each question must be written in the blue book and easily identifiable.Input the answer carefully into Mymathlab; be aware that a mistyped answer will be graded the same as an incorrect answer, zero points. MML homework and quizzes have given you plenty of practice inputting answers.
  • Penalty -5 points off your test score for turning in a blue book with pages not labeled correctly, missing final answer, or unreadable work shown.                                                 Keep your test papers in a Tests section of your portfolio.
  • Tests are taken on a large blue book. Write down the following on the front cover:
  1. Math 167Section 24780                                                           Your Name
  2. Test date                                                                              Test #
  3. Instructor’s name                                                                   Grade %

This course has four class sessions per week. Attendance at all class sessions is required. Arrive to class on time. The instructor may drop you from the class with a point total between 4 and 8. When your attendance point total is greater than 8, you will be dropped from the class, if the instructor has not already done so. You may withdraw from the class up to Friday on the 12th week of the semester. After that, you will remain on the class roster and receive a letter grade for the class.

  • If you need help paying for books and other college expenses, call the Financial Aid Office at (323) 953-4000 extension 2010, or see them at the new LACC Student Services Building or on the website: LACC Office of Financial Aid
  • At the beginning of each primary semester the LACC Foundation has a textbook loan program. Pick up an application at the LACC Foundation Office: Third Floor of the Student Union. Vouchers up to $350 for books will be given to qualifying students within the first two weeks of the semester.
  • If you need special testing contact: Office Of Special Services: Student Services Building Students with a verified disability who may need authorized accommodation(s) for this class are encouraged to notify the instructor and the Office of Special Services (323-953-4000, ext. 2270) as soon as possible, at least two weeks before any exam or quiz. All information will remain confidential.
  • If you are a Military Veteran, visit the LACC Veteran's Resource Center in the LACC Student Union Building, 2nd floor room 218, call (323) 953-4000 Ext. 2125, or email for the resources, support, and advocacy needed to succeed in higher education.
  • The LACC Campus Child Development Center is an on-campus preschool and school-age program for children of LACC students. Priority is given to full-time (12 units) students. Children two-six up to 5 years of age are eligilable for the preschool program. An evening school-age childcare program is available for children from kindergarten through age 10. The location is directly behind the Communications building. Contact the Center at 323-953-4000 ext. 2220.
  • LACC Extended Oppoprtunity Program is a specialy funded program for first time college students
  • LACC Ralph Bunche Scholars Program  is a special program for LACC students who want to transfer to a four year college. The program provides money and special classes to help students transfer into the college of their dreams.
  • Get Microsoft Office™ for your computer as an LACCD student.
  • Get a semester long MTA U-Pass for students for Metro rides all semester.
  • Classroom Rules of Conduct: Violations of Academic Integrity include, but are not limited to, the following actions: cheating on an exam, plagiarism, working together on an assignment, paper or project when the instructor has specifically stated students should not do so, submitting the same term paper or project to more than one instructor, or allowing another individual to assume one's identity for the purpose of enhancing one's grade.
Pre-Statistics Student Learning Outcomes:
  1. The student will construct and interpret graphical and tabular displays of data.
  2. The student will graph and interpret linear models.


in this video I'm going to use
statcrunch to construct a frequency
table this is the data for the blood
type sampling that we just saw we had 20
patients or 20 individuals we sampled 20
of them to get their blood type not
including the positive and negative
factor so we have in our raw data here
the blood type and that's the only
column that we're dealing with a B a B
and so forth this matches the data from
our previous problem if you want to
construct a frequency table what we need
to do as you can see here we have data
you would think we would be in the data
column or the stat column or the graph
it's not quite a graph but we're
actually going to do is go into the stat
column and we're going to go into tables
we are constructing a table and a
frequency table so I will click on
frequency now I need to tell statcrunch
which column it should look in so if I
click on blood type what it's going to
do is going to go through that column
and it's going to look for unique values
values that match as well now you need
to be careful because if you have some
capital letter A's and some lowercase
letter A's statcrunch is going to see
that as two different values you need to
make sure that they're either all
capitalized or all lowercase so it's
gonna look in blood type if you wanted
to select multiple columns if you wanted
multiple tables you need to hold down
the command key the command key and you
would click on that we're not going to
group by anything and the statistics
that we want to calculate we want to
calculate the frequency if you look down
here we can do quite quite a few
different types we want to do the
frequency that's going to count the
number of types if you want to click on
relative frequency in addition to
frequency you need to hit and hold on
your keyboard command if you hold down
command and click it will select
multiple values here multiple choices
we're not going to do cumulative
frequency we're not going to do anything
involved with cumulative but what I do
want to look at is the percent of total
remember relative frequency is going to
give us the decimal form if you want the
percentage form as
you're gonna want to hold down command
and click on the percent of total and
that will convert those relative
frequencies to percentages we're not
going to order by anything and we're not
going to store it in a data table if we
clicked on store in a data table what
that would do it would put it in our
spreadsheet so I'm going to do is click
on compute and here we have our
frequency table for the blood types we
have listed a a B Bo notice they put it
in a different order than I did the
frequencies the number of times that
value appears that observation appears
the relative frequencies remember this
is going to be in decimal form and
excuse me this is going to be the
percent of total it converted the
relative frequencies to percent of total
now if you want to save this let's say I
asked you to do this on a quiz if you
wanted to save this frequency table you
can select it and you could right click
and copy I'm on a Mac so it might look
slightly different right or you could
hit ctrl C and paste it into a Word
document if you wanted to email this to
yourself under options if you click on
download it's going to download it as a
different file what I want to do is to
save it I'm going to title it frequency
table I'm not gonna share it's just with
me and then hit save and what you can do
is either view it in your results folder
or you can actually mail it to yourself
so if you click on mail this is from my
email address this would be your email
address showing up you can mail it to
yourself or if you needed to mail it to
me you could mail it to me as well and
you could enter a message with the
subject and include the full text and
attach graphics this is the same thing
that we could do if we were saving
graphs now we have to be careful though
because with frequency tables they don't
save as images it saves as an actual
spreadsheet so when we actually move on
into this module into graphs and saving
graphs you will be able to right click
and save that picture onto let's say
your desktop so I'm gonna hit cancel
here go back this is the frequency table
and as you can see using statcrunch is a
lot easier the only issue is if you have
to put in the data yourself that could
be time-consuming but now we only have
to put in the data and then statcrunch
will do the calculations for us



Hector Plotquin
Mathematics Department
FH Room 101-F
(323) 953-4000 ext. 2827

 Office Hours

Monday - Wednesday:  10:45 - 12:30pm

Los Angeles City College | 855 N. Vermont Avenue, Los Angeles California 90029


Phone: 323.953.4000


Emergency: 323.953.2911