Weekly Schedule for Stat 113 Spring 2008
Date Week Lecture Topic Material in Text 1 1 Producing Data: Production Types Chapters 1 and 2 2 REC1 2 3 Producing Data: Sampling Chapters 3 and 4 4 REC2 3 5 Producing Data: Experiments Chapters 5,6 and 7 6 R
Name: _
STAT 113 Online Exam 1 Fall 2011
You may have one sheet of paper with notes handwritten in your own handwriting to take this test. Please SHOW ALL YOUR WORK to receive credit. When you finish your exam, turn it in to your instructor, sign the
Name: _
STAT 113 Online Final Exam Fall 2011
You may have one sheet of paper with notes handwritten in your own handwriting to take this test. Please SHOW ALL YOUR WORK to receive credit. When you finish your exam, turn it in to your instructor, sign
STAT 113: Statistics and Society
Fall 2016, TRADITIONAL
Syllabus
Lecturer:
Email:
Office:
TA:
Office hours:
Course site:
Help room:
Ellen Gundlach
[email protected] (best way to contact)
HAAS 114 (phone: 765-496-6875)
Most questions and problems can be
Two-way Tables and the Chi-square Test
04/23
Two-way Table
Two-way table is a special way of displaying your data. Below is an example of displaying
the dataset using the two-way table,
Case study: Researchers want to investigate if there is a relationshi
Plan for today:
Chapter 5: Experiments, Good and Bad
Chapter 6: Experiments in the Real World
What Is an Experiment?
Recall:
Observational study: does not attempt to influence responses.
Experiment: impose some treatment on individuals
The Vocabulary of E
Plan for Today:
Chapter 14: Describing Relationships: Scatterplots and
Correlation
Scatterplot:
Persons muscle mass and their age
Scatterplot:
Basic principles to describe a scatterplot:
1) Form
e.g.: linear, non-linear, or not
obvious
2) Direction
e.g.:
Plan for today:
Chapter 13: Normal distribution
Normal Distribution
Normal Distribution:
Two variables we usually use to describe a sample.
(Although five-number summary is also a good choice.)
Measure of central tendency:
sample mean:
x1 x2 L xn
X
n
Meas
Name: _
Section: _
Quiz 9
Ch 21
1. Write down your name and section number. (3pts)
Use the following to answer questions 2-3:
A recent Gallup Poll asked, Do you consider the amount of federal income tax you
have to pay as too high, about right, or too low
Worksheet 6
Question 1
Case 1: False
Case 3: True
Case 2: False
Case 4: False
Question 2
1) 689/715. Marginal
2) 316/715. Joint
3) 6/322. Conditional
4) 20/391. Yes, it indicates an association between the amount of parental
care and the infants survival
STAT 113 Quiz 9
1) (Optional) Fill in the blanks below using these terms: (2pts)
Probability
Probability model
A _ for a random phenomenon describes all the possible outcomes
and says how to assign probabilities to any collection of outcomes.
_ describes
Worksheet 4
Q1.
Company A:
Company B:
p
p
=0.43.
=0.342.
Company B is more reliable because the sample size is larger.
(Note: here we need to assume that there is no any non-sampling error.)
Q2.
Population: all US citizens
Sample: 1010 adults Gallup Poll
Name: _
Section: _
Quiz 2
Ch5 Ch6
1: Write down your name and section number. (5pts)
Use the following to answer questions 2-7:
Students in a large statistics class were randomly divided into two groups. The first group
took the midterm exam with a sympho
Plan for Today:
Chapter 1: Where Do Data Come From?
Chapter 2: Samples, Good and Bad
Chapter 3: What Do Samples Tell US?
Chapter 4: Sample Surveys in the Real World
The Purpose of Statistics:
Statistics is the study of the collection, organization,
analys
Name: _
Section: _
Quiz 4
Ch 11 and Ch 12
1: Write down your name and section number. (3pts)
2. A well-drawn histogram should have _(2pts)
A) bars with all the same width.
B) no space between bars (unless a class has no observations).
C) a clearly marked
Review and Practice Exam Questions for Exam 1
Learning Objectives for Exam 1
Unit 1, Part 1: Population vs. sample
Explain and give examples of individuals and variables. (Ch 1)
Calculate a proportion. (Ch 3)
Distinguish between a population and a samp
I chose the topic of which political party would handle the immigration issues in the United States of
America better. As I am an international student, I wish to know about what party Americans have more
faith in to resolve such issues.
Based on NYTimes
Name: _
Section: _
Quiz 1
Ch1 Ch4
1: Write down your name and section number. (5pts)
Use the following to answer questions 2-3:
You want to know the opinions of American school teachers about establishing a national
test for high school graduation. You ob
Plan for Today:
Chapter 11: Displaying Distributions with Graphs
Chapter 12: Describing Distributions with Numbers
Histograms
Pie chart and bar graph are the common graphs of the
distribution of a categorical variable.
Histogram is the most common graph o
Chapt 15
2. Answer may vary. One possible answer is least-squares regression line
3. b
4. a
5. 0.48
6. 2.4
7. -5.76
8. the target year in question 7 is outside the range of the data
9. 64%
10. -0.97 (Pay attation to the negative sign.)
11. B A D C
12. Cas
Name: _
Section: _
Quiz 3
Ch8, Ch 10 and Ch 16
1: Write down your name and section number. (6pts)
2. You might try to measure how rich a person is by looking at the cat they drive. In fact,
driving a fancy car has little to do with income (most luxury car
Chance, Probability Model, and Expected Value
Recitation 3/26
Origin
You probably will come back to check those chapters before next time you visit Vegas.
Indeed, probability was firstly invented by gamblers.
Randomness and Probability
Probability is des
Chapt 17,18,20
1. No. All the outcomes are independent.
2. 0
. 1
. 0.01
. 0.6
3. increase. Since it's getting more and more stable by the law of averages.
4. No. The same reason for 1
5. Yes. More black cards have been dealt from the deck. Some the chance
Name: _
Section: _
Quiz 8
Ch 17, 18, and 20
1. Write down your name and section number. (3pts)
2. If I toss a fair coin 5,000 times _(2pts)
A) the number of heads will be close to 2,500.
B) the proportion of heads will be close to 0.5.
C) the price of ora
Worksheet 5
Question 1
Case 1: H 0 : p 0.4
Case 2: H 0 : 5
one-sided
H a : p 0.4
Ha : 5
one-sided
Case 3: H 0 : 10000 H a : 10000
two-sided
Question 2
Case 1
Case 3
Sampling distribution mean: p 0 0.4
Sampling
distribution
Sampling distribution mean: 0 10
Confidence Interval
04/02
What Does Mean/Proportion Not Tell You?
We do see lots of statistics every day. Here are a few facts which may cheer you up.
Fact: Almost 72% of all US internet users are on now Facebook, while 70% of the entire
user base is loc
Name of
advertisement
Shaurya Chetal, Paul,
Advertisement name
Link to commercial
What specific claim is being made by the advertiser?
Use the exact wording.
Where did they get this information?
(Look for fine print or more information on their website, a
Name: Shaurya Chetal
Date of data diary collection: 02/10/16
Data Diary Project
STAT 113: Statistics and Society
25 points total
Big data is a hot topic in society today. It is neither good nor bad, ethical nor unethical, but it is
important. You are prov
Name: _
Section: _
Quiz 5
Ch 13
1. Write down your name and section number. (3pts)
2. If you know the mean and standard deviation of a distribution, do you know the
complete shape of the distribution? _(2pts)
A) Yes, always.
B) Yes if the distribution is
Chapter 15: Regression, Prediction, and Causation
Recitation 3/19
Least Squares Regression and Scatterplot
In the last recitation, we reviewed the scatterplot and its principles: form, direction, and
strength. We often use scatterplot to get a quick idea
Plan for Today:
Chapter 8: Measuring
Chapter 16: The Consumer Price Index and Government
Statistics
Chapter 10: Graphs, Good and Bad
Measuring
Measuring:
Measurements provide information about the individuals.
Theyre not always numbers.
e.g.: the weather
Stat 113 Recitation
Week Nine Chapter 14
The POINT: When you have 2 quantitative variables and you want to look at the relationship between
them, you look at a scatter plot and the correlation between the two variables.
Making A Scatterplot:
To make a sca
Worksheet 5: Hypothesis testing
04/16
A Brief Review
This is a follow-up chapter for confidence interval. Here are a few things you should
know from last week.
The notations:
1) Proportion questions:
Population proportion:
p
Sample size:
2) Mean questions