STAT 111 - Fall 2014
HOMEWORK 1 (Due Friday 5 September at recitation class.)
This homework covers elementary aspects of probability theory which you should know (or
be able to work out) without reference to the lecture material.
NOTE 1: This homework wil
STATISTICS 111
HOMEWORK 12 - Answers
This is NOT a compulsory homework. If you do it you do NOT hand your answers in and
you will NOT be receiving points for doing it. However I suggest that all the same you do it,
since it covers important examinable mat
STATISTICS 111 -
MID-TERM EXAM
29 October 2012
Notes
(i) Points for each question or part of a question are indicated in brackets [.]
(ii) Read each question carefully. More points are usually lost by not reading the
question carefully than by giving inco
hwk022014
STAT 111 - Fall 2014
HOMEWORK 2 (Due Friday 12 September.)
NOTE: Keep a copy of every homework that you do, since sometimes a question in some
homework refers to a question in the previous weeks homework.
Deductions and inductions; probability t
STATISTICS 111
FINAL
EXAM
17 December 2013
* Check CAREFULLY that you have answered all questions that you can answer: more
points are usually lost by overlooking and thus not answering a part of some question
than by giving an incorrect answer.
* The poi
Nancy Yuan
Colman Humphrey
STAT 111 206
26 February 2016
Statistics 111 Homework 3
1. IPS exercise 4.39 p. 251 [Universal Blood Donors]
People with type O-negative blood are universal donors. That is, any patient can receive a transfusion
of O-negative bl
Project 3
1.
2.
3.
This empirical histograms mean and SD are 5.35 and 8.64 respectively. It corresponds
to the probability histogram of one draw. The expected sum and standard error of the
probability histogram for one draw are 5.75 and 8.64 respectively.
Project 4
Distribution of Age Among Penn Students
Sex of the Particpants of the Survey
90% Confidence Interval
1.
The mean for the distribution of age among Penn students is
approximately 19.19 years of age. The standard deviation of this sample is around
Administrative Notes
Midterm will (hopefully) be graded and available in
recitation on Friday, March 6th
If not finished by this Friday, midterms will be
available in recitations after spring break
Statistics 111 - Lecture 14
Introduction to Inference
YOUR NAME:
TAs NAME:
SHOW YOUR WORK.
Very little credit will be given for answers that are not accompanied by explanations.
Do not leave formulae unsimplified. Provide answers in decimals.
You are allowed the use of a calculator and one side of one page o
Administrative Notes
Homework 4 has been posted on website:
Statistics 111 - Lecture 12
http:/stat.wharton.upenn.edu/~stjensen/stat111.html
Homework 4 due in recitation: Friday, Mar. 6
Midterm is Monday, March 2nd (6-8pm)
Introduction to Inference
Samp
Statistics 111 - Lecture 13
Introduction to Inference
Practice Problems
from Chapter 5
Feb. 26, 2015
Stat 111 - Lecture 13 - Sampling
Distributions
1
Administrative Notes
Homework 4 has been posted on website:
http:/stat.wharton.upenn.edu/~stjensen/stat1
Administrative Notes
Statistics 111 - Lecture 4
Homework 1 will be posted today!
Due in recitation on Friday, February 6
No late homeworks accepted for any reason whatsoever
Exploring Data
Course website:
http:/stat.wharton.upenn.edu/~stjensen/stat111
1. Marginal Variable Analysis: Describe the distribution of winter snowfall in Philadelphia and
in NYC City using the statistical tools you have learned so far. Describe what is typical, what is
the range of normal and what is extreme.
In
Philadelphia, th
Project 1
1. The histogram describing income actual has a mean or 72.922, a standard deviation of
81.25, a median of 49.472, a minimum of 4.761, and a maximum of 697.635. The
quartiles are 91.400 (75th percentile) and 26.006 (25th percentile). There are o
SOLUTIONS TO STAT 111 MIDTERM
1. a) The rst study is an experiment as the assignment of treatment is randomized. The second study is an observational study.
b) This is an illustration of Simpsons Paradox where age is a confounder.
Younger women take less
Name: _
TA: _
Section Time:_
Statistics 111
Spring 2010 Midterm Exam
SHOW YOUR WORK.
Very little credit will be given for answers that are not accompanied by explanations.
Do not leave formulae unsimplified. Provide answers in decimals.
You are allowed th
STAT 111 Spring 2010 Midterm Solutions
March 20, 2010
1. (a) Observational study. There is no random experiment here, and all
the subjects are just observed.
(b) Positively correlated. People in the dangerous place are more likely
to keep a gun.
(c) No, t
Statistics 111: Final Exam
1.
2.
3.
You may use one page of notes (two sided)
Calculators are permitted, but not computers.
Where appropriate, please show work and give explanations.
NAME: _
1. A survey organization took a simple random sample of 200 New
Statistics 111 Final Exam
1. You may use one page of notes, two sides.
2. Calculators are permitted, but not computers, iphones, cellphones etc.
3. Where appropriate, please show work and give explanations.
NAME: _
Teaching Assistant:
_
4. Credit card use
Statistics 111 Exam Solutions
1. You may use one page of notes, two sides.
2. Calculators are permitted, but not computers, iphones, cellphones etc.
3. Where appropriate, please show work and give explanations.
NAME: _
Teaching Assistant:
_
4. Credit card
Stats definitions
Statistics The science of analyzing data in whose generate on chance or randomness plays some part.
Statistics is inductive while Probability is deductive.
There are three main activities of statistics
o Estimating the numerical value of
STAT 111 MIDTERM REVIEW PROBABILITY THEORY
1. STATISTICS AND PROBABILITY THEORY
A. What is Statistics?
i. Statistics is the science of analyzing data in whose generation chance or randomness has played some
par
STAT 111: Spring 2014
The Wharton School of the University of Pennsylvania
Professor Abraham Wyner
Course Overview
This is an introductory statistics class for students primarily in the College of Arts and
Sciences (Wharton students are not permitted to t
2/2/15
Administrative Notes
Statistics 111 - Lecture 6
Homework 1 posted last week: due in
recitation this Friday, Feb. 6th
Exploring Data
Homework 2 will be posted later today: due in
recitation on Friday, Feb. 13th
Graphing Relationships
between Varia
Administrative Notes
Statistics 111 - Lecture 7
Homework 1 due in recitation: Friday, Feb. 6
Homework 2 now posted on course website:
Exploring Data
http:/stat.wharton.upenn.edu/~stjensen/stat111.html
Numerical Summaries
for Relationships
between Variab
Administrative Notes
Statistics 111 - Lecture 5
Homework 1 was posted on Tuesday
Due in recitation on Friday, February 6
No late homeworks accepted for any reason whatsoever
Exploring Data
Course website:
http:/stat.wharton.upenn.edu/~stjensen/stat111
Statistics 111
Lecture notes
Spring 2017
Warren J. Ewens
[email protected]
Room 324 Leidy Labs
(corner 38th St and Hamilton Walk).
These notes can be regarded as the textbook for the material to be discussed in STAT 111.
However, it is likely that some
Weight vs Age for Infants
10
Manual Fit for: Data Set | Weight
Weight = mx+b
m (Slope): 0.2012 kg/months
Weight (kg)
b (Y-Intercept): 7.053 kg
5
0
0
10
20
Age (months)
30
Untitled - Fit Y by X of Weight (kg) by Age (months)
Page 1 of 1
Bivariate Fit of Weight (kg) By Age (months)
14
Weight (kg)
13
12
11
10
9
8
15
20
25
30
35
Age (months)
Linear Fit
Linear Fit
Weight (kg) = 7.1238546 + 0.2011831*Age (months)
Summary of Fit
January 19
Biases
1. We make a mistake representing units that are not representative of our population. (ex.
Blood pressure reduction medicine, but somehow only give it to men in this experiment.
Then we cant generalize the results to both men & women. S