Math 160 I
Fall 2013
Assignments
Assignments are due in class on the due date.
Please show your work (where appropriate). Problems with only an
answer may not receive credit (This is true for both homework and exams)
Please note that
answers to odd-numbered questions may be found in the back of the book. Answers
for these questions will not be given credit without supporting detail.
When turning in an assignment, please turn in only that assignment - not
any late assignments you might have. Late assignments should be turned in
to me separately, and late assignments can not be accepted after the graded
assignment is returned to the class.
There will be two varieties of exercises in this course.
The first sort will be basic, generally short answer questions
usually taken from the textbook. These will be assigned generally once a
week, and will usually be 10 points.
The second sort will call for critical analysis and professional writing.
These exercise will generally be taken from a group of textbook exercises, but
you will be asked to write as if you are writing a report. You should open
with a description of the problem (which can be, for the most part, taken from
the problem write-up(s)), proceeding then to respond to the individual
questions, writing as if for a formal report (and not for a homework
assignment), integrating graphs and other documents from MiniTab into the text
(use MS Word) and not as a series of appendices. These final reports should
printed out from an appropriate word processing program (such as MS Word).
These questions will be given greater weight than the basic type I questions.
Late assignments are accepted with an increasing penalty until
the graded assignment is returned to the class, after which time late
assignments are not accepted. All materials must be submitted by class
time on the last day of class. Unless otherwise specified, all assignments
must be submitted in hardcopy at the start of the class meeting in which the
assignment is due.
A note on essay/discussion/comment questions. These
are very important parts of an exercise (including assignments of the basic
sort). Please respond with a thoughtful,
well-written paragraph (more if the question calls for it). Part of your
grade on the assignment will depend on the quality of your written response.
- Assignment #10, due Monday, November 25.
Please work:
- On pages 357 - 359, problems 6.10 through 6.12 (all), 6.17, and 6.27
- On page 363, problems 6.36 and 6.37
- On pages 366 - 367, problems 6.38 and 6.39
- On page 369, problems 6.40, 6.41, and 6.42
- On page 373 problem 6.43
- On page 375, problems 6.45 and 6.46
- On page 377 Problems 6.47, and 6.48
- On pages 378 - 380, problems 6.53, 6.56, and 6.57
- Assignment #9, due Monday, November 18.
Please work:
- On page 319, problems 5.36 and 5.37
- On page 322, problem 5.38
- On pages 333 - 334, problems 5.43, 5.45, 5.46, and 5.47
- On pages 346 - 347, problems 6.1, 6.2, 6.3, and 6.4
- On page 351, problems 6.5 and 6.6
- On pages 353 - 355, problems 6.7, 6.8, and 6.9
- Assignment #8, due Monday, November 11.
Please work:
- On pages 275 - 277, problems 4.73, 4.74, 4.75, 4.76, and 4.85
- On pages 302 - 306, problems 5.2, 5.3, 5.4, 5.5, and 5.6
- On pages 309 - 311, problems 5.8, 5.9, 5.10, 5.11, and 5.22
- Assignment #7, due Thursday, October 31.
Please work:
- On page 238, problems 4.12 and 4.13. These two problems
refer to Example 4.9 on page 237.
- On page 239, problems 4.14 and 4.15
- On page 242, problem 4.18
- On page 246, problems 4.23 and 4.24
- On page 247, problems 4.30 and 4.34
- On pages 257 - 258, problems 4.53, 4.54, and 4.55
- On page 268, problems 4.69 and 4.70
- On page 270, problem 4.71
- Assignment #6, due Thursday, October 24. Please work:
- On pages 198 - 200, problems 52, 54, 58, 63, and 65 (that is, 3.52,
etc.)
- On pages 202 -212, problems 79, 81, 83, 84 (take a look at figure
3.14 on page 207 for another look at this sort of problem), and 88
- On page 220, problems 100 and 101
- On page 222, problem 102
- On page 226, problem 134
- Assignment #5, due Monday, Oct. 14. Please work
- On page 121, problem 2.78. On problem 2.78, please
work parts (a) and (b) mostly by hand. That is, use MiniTab (or a
statistical calculator) to calculate means and standard deviations,
but calculate the correlation coefficient by hand,
using a calculator only for the operations of addition, subtraction,
multiplication, and division.
You are, of course, welcome to check your work on the correlation
coefficient by using MiniTab (or some other software / calculator). Please show all your work (problem 2.78 will be worth
two points).
- On page 147, problems 2.125 (two points), 2.126, and 1.127.
Please use just a calculator for these three questions, drawing a
table such as we did in class and calculating distributions by hand,
showing your work. You are, of course, welcome to check your
answers using MiniTab (or, in the case of the odd-numbered problems,
in the back of the book).
- On pages 172 - 173, problems 3.11 and 3.12
- On page 175, problems 3.14 and 3.15
- On page 185, problem 3.30. Your answer to part (c) is
particularly important - see the definition on page 176.
- On page 186, problem 3.36. Use Table B at line 111 in your
answer to part (b).
- Assignment #4, due Monday Oct. 7. Please work
- On page 96, problems 2.24 and 2.25
- On page 98, problem 2.34. Please include the value of
r-squared (use MiniTab or some other package to calculate) in your
discussion in part (d) of the question.
- On page 106, problems 2.47 and 2.48
- On page 121, problem 2.77
- Examine the student survey in the MiniTab Portable file
Survey2013.MTP. Pick two quantitative variables in the survey
and examine the association between them.
You will want
to use MiniTab (or some other system of your choice).
- Give a reason for selecting those two variables.
- Plot (and include copies) of the histograms of the two
variables, and include the average and standard deviation.
Discuss both distributions. Are there outliers, and, if
so, how should we treat them (include? exclude?
Why?). If you claim that a distribution is roughly normal,
please include a probability plot to convince me.
- Graph the scatterplot and regression line.
- Calculate r-squared. Use the value of r-squared and
the other parts of this problem to write a good paragraph on
what you have discovered about this possible association between
the two variables selected. Remember that, among other features,
I would like to know the strength and direction of
the association.
- This part of the assignment will be worth four points of the
total (10 points).
- This assignment will be worth 10 points and is a regular weekly
assignment. Important note: This assignment includes
material that will be on Friday's exam (October 4). Although
it is not due until the following Monday, please work the problems
so that you are sure that you understand the principles and the
calculations involved, and please be prepared to ask questions on
these problems on Thursday or before.
- Assignment #3, due Friday, September 27.
Please work
- On page 57, problems 1.101 and 1.102
- On page 58, problems 1.103 and 1.104
- On page 63, problems 1.105 and 1.106
- On page 64, problems 1.107 and 1.108
- On pages 71 - 72, problems 1.122, 1.126, and 1.142. Please
use Table A for these exercises.
- This exercise will be worth 10 points.
- Assignment #2, Due Friday, September 20. Please work
- On pages 31 - 40, problems 1.48, 1.51, 1.52, 1.54, 1.55, 1.56, and
1.57. On these exercises, do not use any statistical software
(except to check your work), and show your work (numbers by themselves
will not receive credit in most cases).
- On page 46, work problems 1.62, 1.63, and 1.64. Please use
Minitab for these exercises (even if Minitab's way of calculating
quartiles and such may differ from the textbook's method ).
Discussions / explanations should be professionally written and part of
the grade will depend on the quality of your writing. Using the
data in the BEER file (in the folder Chapter 1 in the MiniTab folder),
MiniTab finds three outliers instead of the one referred to in problem
1.62. You might want to double-check MiniTab's outlier calculation
(using MiniTab's five-number-summary for the BEER data). In
answering these questions, please use the low outlier. You can
exclude the low outlier by placing an asterisk (*) in the PERCENTALCOHOL
variable in the worksheet on the appropriate row. The outlier is
on row 57. Replace the 0.4 entry with an asterisk and re-do the
five-number summary.
- This exercise will be worth 10 points.
- Assignment #1. Due Monday, September 16 (Please note change in
due-date). Please work
- On pages 22 - 27, problems 1.14, 1.16, 1.19, 1.33,1.34. Since MiniTab does not support back-to-back stemplots
(at least not at last check), for problem 1.34 feel free to use multiple
stem-and-leaf charts (use Groupnum in the "by variable" box), or use
multiple boxcharts instead (we'll see how to do all this in class - if I
forget to do this in the first week, please remind me). For
problem 1.33, please use the data in the textbook and do the exercise by
hand.
- Data for 1.33, 1.34 can be found in the minitab data file GLUCOSE
(more details later). However, please be ready to do this without the
software on an exam
- This exercise will be worth 10 points.
- Assignment #0. An optional class survey.
Please
complete by Friday, September 6 if you choose to participate.
- Every semester in sections of Math 160, we run an informal
survey of students taking the course that semester. The results
(collected over all of the sections) are then made available to the individual sections of Math 160
for use as interesting data throughout the semester.
- Please visit the web site for the Math 160 survey at
http:babbage.pugetsound.edu/jpreszler/survey.html. After you
respond to the questions in the survey, you will be sent to a page that
gives you a validation number. Please email this validation number
to me at
mailto:matthews@pugetsound.edu?subject=Math 160 survey validation
number. I will then collect them at the end of the first week
(this week) and send them on to Professor Preszler, who will include
your survey in the Math 160 collection.
- This is an optional survey, and you are not required to
participate (although participation is greatly appreciated). The
raw results of the survey will be made available to this section of Math
160 and to other sections of Math 160 for examples and exercises as we
work our way through the semester. Many thanks!
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