Notes for Statistics 3011 University of Minnesota Fall 2010 Section 007 Instructor: Craig Rolling
*Notes accompany the second edition of Statistics: The Art and Science of Learning From Data by Alan A
Statistics 3011, Course Notes Supplement 3
October 4, 2010
Pregnancy Continued
Suppose that nationwide, 41% of all babies from rst pregnancies are born before the 40th week, and 62% of all babies from
STAT 3011
Section 007, Fall 2010
STAT 3011 Syllabus Course Description
This course provides an introduction to the basic methods of statistics. Topics will include descriptive statistics and graphs, p
Stat 3011, Spring 2010
Sample Final Exam
Stat 3011: Sample Final Exam
Sample
Name: Instructions From Craig: This is a sample exam that was written by another instructor. The structure of our nal exam
Sample Homework Problems Using R STAT 3011, Section 007 Friday, September 10, 2010
Problem 1. A 20-sided die a) Roll a 20-sided die 11 times, and use R to take the mean of the values an.d to d raw a b
Stat 3011, Fall 2010
Sample Midterm 1
Section 1: Multiple Choice (8 Questions, 3 points each) For the multiple choice questions, circle one of the listed choices for each question (no explanation is n
Solution for Homework 3
Yicheng Kang
October 5, 2010
2.48
a) Upon examination of the data, the countries in Africa will have a larger standard deviation since the spread of the data is greater for thi
Solutions for Homework 4
Yicheng Kang
October 12, 2010
5.19
a)The sample space for the possible genders of four children is FFFF,FFFM,FFMF,FFMM,FMFF,FMFM,FMMF,FMMM,MMMM,MMMF,MMFM,MMFF,MFMM, MFMF,MFFM,
Homework 5 Solutions
Yicheng Kang
October 14, 2010
6.2
a) The probabilities for each possible outcome in the sample space are the same:1/36. There is only one instance in which the maximum is one. Thu
Homework 6 Solutions
Yicheng Kang
October 29, 2010
6.30
x = .75 which corresponds to a cumulative probability of 0.2266. x = .5 z= which corresponds to a cumulative probability of 0.6915. 0.6915 0.226
6.3 Applications of Normal Distribution
Distributions
Objectives:
1. Find probabilities and percentages from known values.
2. Find values from known areas.
Overview:
This section presents methods for
Open access, freely available online
Essay
Why Most Published Research Findings Are False
John P. A. Ioannidis
Summary
There is increasing concern that most current published research ndings are false
Homework 9 Solutions
Yicheng Kang
November 18, 2010
Problem 9.21
9.21.a
The variable has two categories: (1)garlic being more eective; (2)placebo being more eective. And the parameter is the proportio
Homework 10 Solutions
Yicheng Kang
December 2, 2010
Problem 10.25
Step 1 Quantitative response variables; Random samples from two independent groups with large sample size, 150 > 30, 182 > 30.
Step 2
Solution for HK1
Yicheng Kang
September 16, 2010
Problem 1
Solution.
(a)
The R code is as following.
> MealCosts=c(10.00,2.40,6.50,3.25,6.70,2.00,6.00,3.00,4.00,0.85) > mean(MealCosts) [1] 4.47
(b) Th
Solutions for HW 2
Yicheng Kang
September 28, 2010
1
a
Problem 2.4
Categorical
b
Quantitive
c
Categorical
d
Quantitive
2
a
Problem 2.6
Continuous
b
Discrete
c
Continuous
d
Discrete
1
3
a
Problem 2.8
Q
Statistics 3011, Course Notes Supplement 4
October 11, 2010
The Binomial Distribution in R
The dbinom function
Let X be a binomial random variable with number of trials n and probability of success p.
Statistics 3011, Course Notes Supplement 7
December 3, 2010
Chapter 10, Example 5 in Textbook
Example 5 in Section 10.1 of the textbook presents the following data on teenagers TV watching habits and
Statistics 3011, Course Notes Supplement 6
November 29, 2010
Chapter 10 Recap and R Examples
In Chapter 10 we discussed methods of statistical inference to compare two population means. We learned how
Conditional Probability Diagram for Example 5.5
Shaded = Moral Issues Most Important (20%)
Red = Voted for Bush (51%)
Box = S = Sample Space = All 2004 presidential election voters
A = Moral Issues Mo
Probability Distribution of X - a single roll of a 20-sided die X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 P(X) 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.0
Statistics 3011, Course Notes Supplement 5
October 27, 2010
Dice Game
Rules of the Game: You have two ways to win $20, but you must pick one or the other: Option 1: Roll a 20-sided die once, and predi