
CS109: Introduction to Probability for Computer Scientists
Winter 20162017

Staff Email:
cs109@cs.stanford.edu
Note: This email address only accepts messages from email addresses
ending in stanford.edu. Please make sure to send messages
from your Stanford account, otherwise we won't receive them.
Data sets for Problem Set #6:
Data bundle for PC
Data bundle for Mac
Announcements
Week of March 20th

The CS109 Final Exam is Friday, March 24 from 8:30am11:30am.
The location of final exam by first few letters of your
last name:
 A  Pe: Hewlett 200
 Pf  We: Hewlett 201
 Wf  Z: Hewlett 103
 The final exam is a closed book, closed calculator/computer
exam. You are, however, allowed to use six 8.5 inch x 11 inch
pages (front and back; 12 sides total) of notes in the exam.
The last page of the exam is a Standard Normal Table, so you
won't need to bring one as one of your pages of notes.
 The final exam is comprehensive (covers the whole class),
except for the material on computer simulation of probabilities
on March 10 and modeling uncertainty on March 13.
Week of March 13th
Week of February 20th
Week of February 13th
 A midterm review session will be help on
Tuesday, February 14th from 3pm5pm in Cubberley Auditorium.
Slides from the midterm review session are available
here.
A version of the midterm review slides with notes is also
available
here.
 The CS109 Midterm Exam is scheduled for
Thursday, February 16th from 7pm9pm in Memorial
Auditorium.
The midterm exam is closed book and closed
computer/calculator. You are allowed to use three 8.5 inch x
11 inch pages (front and back) of notes in the exam (six sides
total). The exam will include a Standard Normal Table, so you
don't need to bring one with you. The exam will cover
material through class on Friday, February 10th. In other
words, the material from Problem Set #4 is fair game for the
exam (and we would encourage you to use Problem Set #4 as a
source of study problems for the more recent material that may
be covered on the exam).
Week of February 6th
 The CS109 Midterm Exam is scheduled for
Thursday, February 16th from 7pm9pm in Memorial
Auditorium.
The midterm exam is closed book and closed
computer/calculator. You are allowed to use three 8.5 inch x
11 inch pages (front and back) of notes in the exam (six sides
total). The exam will include a Standard Normal Table, so you
don't need to bring one with you. The exam will cover
material through class on Friday, February 10th. In other
words, the material from Problem Set #4 is fair game for the
exam (and we would encourage you to use Problem Set #4 as a
source of study problems for the more recent material that may
be covered on the exam).
Week of January 30th
 The CS109 Midterm Exam is scheduled for
Thursday, February 16th from 7pm9pm in Memorial
Auditorium.
If you have an unmovable academic conflict with the midterm,
please email Mehran by 5pm on Wednesday, February 8th to let him
know about the conflict. In your email make sure to
include all the times that you would be available to take an
alternate midterm exam from February 15th to 17th.
Week of January 23rd
 Solutions to Problem Set #1 were released in class on January
27th. As a result, we are no longer accepting submissions for
the first Problem Set.
 Solutions to the Problem Sets in CS109 will only be released in
hardcopy. If you do not pick up the solutions in class on the
day they are released, you can get them from the handout bins in
Gates.
 Mehran's office hours this week are moved to Friday, Jan. 27th
from 24pm. (They will return to Wednesdays next week.)
Week of January 16th
 CS109 CA Josh Grinberg has put together a
Combinatorics
Reference Sheet for your future use in CS109.
(This reference sheet is also available from the Handouts page.)
Week of January 9th
 Information on adding CS109 in Gradescope
(including the code you'll need to add CS109) and how to
submit your assignments is
available here.
Note: you will need to login with your SUNetID to access that
page.
 If you are interested in writingup your problem sets using
the LaTex system (this is optional), there is a short
intoduction to LaTex available as a
PDF document, and you can also obtain the
original LaTex file that was used to generate that
PDF (so you can see an example of LaTex source).
If you would like to write your solutions for the Problem Sets
in LaTex, you might find it useful to start with
this
LaTex template file for Problem sets.
An online LaTeX editor and compiler is available at https://www.overleaf.com/.
 For those of you using LaTex to write your assignments, former
CS109 student Joe Delgado has written a nunber of snippets for Latex in
Sublime, which he has made available on github. You an find a
repo of statistical snippets at:
https://github.com/djoeman84/Latexstatisticalsnippets
and a repo for more general math snippets at:
https://github.com/djoeman84/LatexMathSnippets.
 Welcome to CS109!
 The first class is Monday, January 9th, 11:30am12:50pm in
Bishop Auditorium.
 CS109 is not videotaped this quarter. If you have a
conflict with the class time, we strongly suggest taking the
class in a different quarter.
 Please watch this web site for important
class announcements or assignment errata.
 Handouts from class will be available on the
handouts page. Any hardcopies
remaining after class will be available in the handout bins
on the first floor of the Gates building.
 Staff office hours and locations will be posted on
the Course Staff page.
 The Wall Street Journal published an article entitled New Hiring Formula Values Math Pros talking about how employers
are seeking computer scientists with training in statistics and
probability. CS109 is specifically mentioned in the article.
 An article from the New York Times discusses the
increasing importance of statistics in computing. The article is
entitled
For Today's Graduate, Just One Word: Statistics.