Stats 8 fall 2016 (Baldi) -~ Midterm 2
Name: Student IO: 4N: SKIUER K E1
Keep your exam to yourself and your eyes on your work. No electronic devices are allowed at any time,
except for your calculator. Cheating will be reported and result in a grade pena
Stats 8 winter 2017 (Baldi) Midterm 1
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Name: _ Student ID: , . _ _ , "X 3 (1; cfw_
Keep your exam to yourself and your eyes on your work. No electronic devices are allowed at any time,
except for your calculator: Cheating will be r
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Stats 8 fall 2016 (Baldi) Midterm 1
Name: Student ID:
Keep your exam to yourself and your eyes on your work. No electronic devices are allowed at any time,
except for your calculator. Cheating will be reported and result in a grade penalty at the i
Collecting data
MOS5e chapters 5 and 6
Copyright Dr. Brigitte Baldi 2017
Two sources of information
Sample
(data for some individuals)
Population
(data for all individuals)
statistic
parameter
population
sample
1
The role of randomness
How do you choose
Stats 7 Winter 2017 - Homework 3
5.14 a. Response bias.
b. Selection bias.
c. Nonparticipation bias.
5.72 Answers will vary. When someone is first asked who they plan to vote for they are likely to give a
truthful answer. But if subsequent questions lead
Stats 7 Winter 2017 - Homework 5
8.60 a. The rectangle has height =1/10=0.1 because the range of X is 20 10 = 10.
b. The rectangle has height =1/20=0.05 because the range of X is 20 0 = 20.
8.62 a. .3 = (13-10)(0.1)
b. .25= (5-0)(0.05)
8.68 a.b.c.
8.70 Re
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https:/www.coursehero.com/file/16891569/Stats7-Midterm1KEYFall2016pdf/
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Probability continuous
random variables
MOS5e chapter 8 sections 5 and 6
Copyright Dr. Brigitte Baldi 2017
Reminder:
Discrete vs. continuous sample spaces
Discrete sample space:
Undergraduate level
For a random student:
S = cfw_freshman, sophomore, junio
Stats 7 winter 2017 (Baldi) Midterm 1
Name: Student ID: ANQ UV 3 Vigil
Keep your exam to yourself and your eyes on your work. No electronic devices are allowed at any time,
except for your calculator. Cheating will be reported and result in a grade penalt
Sampling distributions
MOS5e chapter 9 (sections 3, 4, 6, and 9-10 only)
Part II of flipped lesson
Copyright Dr. Brigitte Baldi 2017
Population (all individuals)
Sample ( individuals)
statistic
parameter
(only 1 value)
(different values for
different ran
Probability
MOS5e chapter 7 (and chapter 8 sections 1-2)
Copyright Dr. Brigitte Baldi 2017
Randomness and probability
Random event
Random variable
Probability of getting a given outcome for a random event
Properties of the event studied
Observed frequenc
Estimating a population
proportion
MOS5e chapter 10 (sections 1 and 2)
Copyright Dr Brigitte Baldi 2017
Conditions for inference on a proportion
Assumptions:
1. The data used for the estimate are a random sample (or unbiased
representative sample in a ra
Stats 7 spring 2016 (Baldi) Midterm 1
Problem 1 (7 points) Forbes published a list of the
top 10 wealthiest people in the world. Here are their
names and estimated wealth (in billions of dollars).
a) The range of wealth of the top 10 wealthiest is
billion
Correlation and Regression
MOS5e chapter 3
Copyright Dr. Brigitte Baldi 2017
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
the
Descriptive statistics
MOS5e chapter 2
Part II: issues and examples
Copyright Brigitte Baldi 2017
Two sources of information
Sample
(data for some individuals)
Population
(data for all individuals)
statistic
parameter
population
sample
1
For every study,
Stats 7 winter 2017: Basic Statistics
Dr. Baldi, course instructor
UCI class website at eee.uci.edu/17w/37810
The website has the syllabus, exam dates, reading assignments,
lecture notes, contact information, office hour times and locations
All course-rel
Stats 7 spring 2015 (Baldi) Midterm 2 SOLUTIONS
Problem 1 (10 points) The Pew Research Center published this week a report titled Americas
Changing Religious Landscape, based on interviews conducted in 2014 with over 35,000
American adults. We will use th
Chapter 9, exercises 24, 25, 26, 27, 48, and 59.
24.
a) the mean of the sampling distribution o of the sample mean = mu
b) one value from the sampling distribution of the sample mean = p
25.
a) mean of the sampling distribution p
b) one value from sample
Liliana Lucas
Statistics Chapter 2 HW: 1,2,19,20,28,39,43,44ab,47b,52a,62,62
1. a. Variables: income, serious crime rate, teen birth rate = 3 total
b. Observational unit: Each of the fifty states.
c. sample size: the entire population for each of the fift
Correlation and Regression
MOS5e chapter 3
Copyright Dr. 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
the
Liliana Lucas
Chapter 8, exercises 78, 79, and 80.
Chapter 9, exercises 24, 25, 26, 27, 34, 47, 48, 59, 61, and 67
CHAPTER 8
*[less than or equal to <= , greater than or equal to >=]
78. a. P (62<= A <= 65) = .0453
b. P (60<=B <= 70) = . 0231
c. P(C<70) =
Chapter 7, exercises 14, 18, 22, 24, 26, 32, 34, 35, 36, and 38
Chapter 8, exercises 2 and 14abc.
Chapter 7:
14. a. six dots: 1/6
b. one or two dots: 2/6
c. an even number of dots: 3/6
18. Johns reasoning is not correct because every time that
Chapter 8, exercises 78, 79, and 80.
Chapter 9, exercises 24, 25, 26, 27, 34, 47, 48, 59, 61, and 67
CHAPTER 8
*[less than or equal to <= , greater than or equal to >=]
78. a. P (62<= A <= 65) = .0453
b. P (60<=B <= 70) = . 0231
c. P(C<70) = .0154
d.
ICS 31 UC IRVINE
YOUR NAME _
WINTER 2015 DAVID G. KAY
YOUR STUDENT ID (8 DIGITS) _
*
* K E Y *
*
YOUR UCINET ID _
YOUR LAB SECTION (CIRCLE ONE):
1.
8:00 Sanket Khanwalkar
2. 10:00 Neeraj Kumar
First Midterm
3. 12:00 Sanket Khanwalkar
4.
2:00 Vignesh Raghu
Professor Baldi
Statistics 7
STATISTICS HOMEWORK ASSIGNMENT #4 (DUE 02/07/17)
7.18
a. His reasoning is incorrect because the total number of times that he has bought a lottery ticket is
independent from the chance that hell win it. Just because its the 10
Martinez ! 1
Gabriela Martinez
Professor Baldi
Stats 7
13 February 2016
Homework 6: Chapters 8 and 9
Chapter 8
Question 78
Mean = 65 in.
Standard Deviation = 2.7 in.
a.! Normalcdf (62, 65, 65, 2.7) = 0.3667
36.67% of college women fall under the range of