Statistics 8, Fall 2010, Professor Utts
HW 4, Due Oct 27, page 1
Homework 4 Solutions
Chapter 7: # 17, 27, 28
Chapter 7: #35, 51, 53 (answer in back, show work), 55
Chapter 8: #1, 14, 27
Assigned Wed, October 20
7.17
a. BY, BS, BA, YS, YA, SA.
b. 1/6.
7.2
Announcements:
You can turn in homework until 6pm, slot on
wall across from 2202 Bren. Make sure you
use the correct slot! (Stats 8, closest to wall)
We will cover Chs. 5 and 6 first, then 3 and 4.
Mon, Oct 4 discussion is practice with R
Commander. Di
Announcements
Please make sure you register your clicker at
the clicker website. Link at course webpage.
When you turn in homework, please do
problems in the order assigned. (All of Friday,
then Monday, etc.) Put your name, Discussion
Section number, an
Announcements:
First midterm is a week from Monday (Oct 18), covering
Chapters 1 to 6. Sample questions (and answers) have
been on course website all along. Mixture of freeresponse and multiple choice. You are allowed one sheet
of notes (both sides of pa
Announcements:
Midterm Monday. Bring calculator and one sheet
of notes. No calculator = cell phone!
Assigned seats, random ID check.
Review Friday. Review sheet posted on website.
Mon discussion is for credit (3rd of 7 for credit).
Week 3 quiz starts
Announcements:
We will start using R Commander again, so see one of
us if you are still having problems downloading it.
Next Friday I will be out of town, Shandong Min will
give the lecture.
Homework: (Due Wed, Nov 3)
Chapter 8:
#33 (Note that problem c
Homework: Due Wed, Nov 3rd
Chapter 8, # 48a, 55c and 56 (count as 1), 67a
Announcements:
There are some office hour changes for Nov 5, 8, 9 on website
Week 5 quiz begins after class today and ends at 1pm on Wed
If you take more than 20 minutes to compl
This week: Chapter 9 (will do 9.6 to 9.8 later, with Chap. 11)
Understanding Sampling Distributions:
Statistics as Random Variables
ANNOUNCEMENTS:
Shandong Min will give the lecture on Friday.
See website for different office hours Fri, Mon, Tues.
New
Stats 8 spring 2016 (Baldi) Midterm 1 SOLUTIONS
Problem 1 (9 points) The Ebola virus is extremely contagious and often fatal. West Africa
experienced a horrific outbreak of Ebola in 2014. Here are the numbers of death from Ebola
(sorted in increasing orde
Descriptive statistics
PSLS chapters 1 & 2
Part II: issues and examples
Copyright Brigitte Baldi 2016
Quantitative or categorical variable? Ask:
What/who are the individuals/units in the data set?
What is being recorded about those individuals/units?
Is
Probability
PSLS chapters 9 and 10
Copyright Brigitte Baldi 2016
Randomness and probability
Random event
Random variable
Probability of getting a given outcome for a random event
Properties of the event studied
Observed frequencies
Subjective / personal
Correlation and Regression
PSLS chapters 3 and 4
Copyright Brigitte Baldi 2016
In a experiment, 16 student volunteers at
Subject
the Ohio State University drank a randomly
assigned number of cans of beer. Thirty
minutes later, a police officer measured
t
Announcements
Quiz 1 available at 1pm. If you do not receive an
email telling you it is available, you need to contact
me so I can add you to the list.
list
Office hours on web were wrong. They were
g
corrected on Mon evening.
If you plan to use R Comm
STATISTICS 8
Professor Jessica Utts
http:/www.ics.uci.edu/~jutts/8
Course Goals
Help you understand and appreciate how
statistics affects your daily life.
Teach you tools for understanding statistics
and statistical studies you encounter in
biological s
Statistics 8, Fall 2010, Professor Utts
HW 5, Due Nov 3, page 1
Homework 5 Solutions
Wed, Oct 27 assignment from file on website
Chapter 8: #33, 39, 87
Chapter 8: 48a, 55c and 56 (count as 1), 67a
Assigned Wed, Oct 27
1. Suppose a defense attorney is tryi
Statistics 8, Fall 2010, Professor Utts
HW 3, Due Oct 15, page 1
Homework 3 Solutions
Chapter 6: # 44*, 45*, 50bcde, 52 (*44 and 45 count together for one point)
Chapter 3: #13, 23, 63, 86
Chapter 4: #13, 21, 36
Assigned Friday, October 8
6.44
No. For ins
Statistics 8, Fall 2010, Professor Utts
HW 2, Due Oct 8, page 1
Homework 2 Solutions
Chapter 5: #5a, 17, 18, 76 (Use R Commander)
Chapter 5: #29, 34, 43, 51
Chapter 6: #23, 36
Assigned Friday, Oct 1
5.5
a. Positive association. As pulse before goes up, pu
Statistics 8, Fall 2010, Professor Utts
HW 1, Due Oct 1, page 1
Homework 1 Solutions
Chapter 1: # 10; Chapter 2: # 9, 27
Chapter 2: #42ac, 51, 61, 75
Chapter 2: #81, 84, 99
Assigned Friday, September 24
1.10
a. This statement was based on an observational
Statistics 8, Fall 2010, Professor Utts
HW 6, Due Nov 8, page 1
Homework 6 Solutions
Chapter 9: #15, 25, 37, 44
Chapter 9: #50 (Each of the 6 parts counts as 1 point)
Chapter 10: (NOT TO HAND IN) #5, 22, 42
Assigned Wed, Nov 3
9.15
Research question: How
Statistics 8, Fall 2010, Professor Utts
HW 7, Due Nov 19, page 1
Homework 7 Solutions
Chapter 12: #15b and 16b (15b and 16b count as 1 point together), 19, 85 (85 counts double)
Chapter 12: #62, 83, 101
Chapter 9: #66, 90, 91
Assigned Fri, Nov 12
12.15 b.
Statistics 8
Sample Midterm 2 KEY
There are 6 problems on 3 pages. Each part of each problem is worth 6 points except as shown. A copy of
Table A.1 is attached. Show all work.
1. An herbal treatment is being tested to see if it will help people who are su
STATISTICS 8
CHAPTERS 1 TO 6, SAMPLE MULTIPLE CHOICE QUESTIONS
Correct answers are in bold italics.
This scenario applies to Questions 1 and 2: A study was done to compare the lung capacity of
coal miners to the lung capacity of farm workers. The research
Statistics 8
Sample Midterm 1 Solutions
NAME:
Student ID#:
One page of notes allowed. You should have 8 problems on 3 pages. Each part of each problem is 5 points.
1. Eleven students were asked to measure their pulses for 30 seconds and multiply by two to
STATISTICS 8: CHAPTERS 7 TO 10, SAMPLE MULTIPLE CHOICE QUESTIONS
1. If two events (both with probability greater than 0) are mutually exclusive, then:
A. They also must be independent.
B. They also could be independent.
C. They cannot be independent.
2. I
Collecting data
PSLS chapters 7 and 8
Copyright Brigitte Baldi 2016
Population versus sample
!
Population
" parameter
!
Sample
" statistic
population
sample
Descriptive Statistics: using numerical and graphical summaries to
characterize a data set or des