Statistics 104 Spring 2011 Section #8
Topics for Section Classical Hypothesis Testing 2 Test for Two Way Table Inference for Simple Regression Interpretation of R2 Standard deviation of residuals s Co
Stat 104 Section 8
Josh Zagorsky <[email protected]>
Notes From HW 6
1. When asked for a hypothesis test, don't do a confidence interval. 2. Two-sided versus one-sided tests 3. What's a p-value
Stat 104 Section Notes 5 Problem Solutions 1) A friend of mine is pregnant. It is known that birth weights of babies in the US are approximately normally distributed with a mean of 3300 grams and a st
Stat 104 Section Notes 4 Problem Solutions 1) In a 7 game playoff series like the World Series, the first team to win 4 games wins the series. a) Assuming there is equal probability that each team win
Stat 104: Quantitative Methods for Economists
Class 11: Random Variables, Part I
1
Turning Letters into Numbers
We've been studying statements like P(A) or P(B|A). That is, probability of different ev
Practice Exam 1 Solutions
Final Examination Directions The exam will end 3 hours minutes after it begins. The exam is divided into two parts. The first part is multiple choice. Please answer the multi
Statistics 104: Quantitative Methods for Economists
Fall 2010 Final Examination Directions This exam is open book/open notes. Calculators are allowed but not laptop computers. The exam will end 3 hour
Stat 104 : Quantitative Methods for Economists
Study Guide Solutions, Part 1
Practice Problems 1) Describe the shape of the histogram:
This histogram is bimodal; that means it has two distinctive peak
Stat 104: Quantitative Methods for Economists
Study Guide Solutions, part 2
1) The table below shows, for credit card holders with one to three cards, the joint probabilities for number of cards owned
Statistics 104
Homework #9
Due: April 10, 2009
1. Fertility. Fertility rate is defined as the number of children a woman bears, on average, in her
lifetime. The association between the percentage of m
Stat 104 Section 3, Spring 2011 Contact info 1. Josh Zagorsky, <[email protected]> 2. Office Hours: Thursdays from 2pm-3pm in Science Center 600, or email for other times. Notes from p-set #2 1
Statistics 104 Spring 2011 Section #3
Topics for Section Probability and Conditional Probability Unions, Intersections, Complements, Disjoint Events 2 x 2 Tables Independence of Events Bayes' Rule/The
Stat 104 Section 2, Spring 2011 Contact info 1. Josh Zagorsky, <[email protected]> 2. Office Hours: Thursdays from 2pm-3pm in Science Center 600, or email for other times. Notes from p-set #1 1
Stat 104 Section 1 1 Contact Info Josh Zagorsky, <[email protected]> Office Hours: Thursdays from 2pm-3pm in Science Center 600, or email for other times. 2 Logistics Course website: my.harvard
Stat 104: Quantitative Methods for Economists
Class 13: Important Discrete Probability Distributions
1
What is a probability distribution ?
Let X be a random variable. A probability distribution for X
Stat 104: Quantitative Methods for Economists
Class 14: Continuous Probability Distributions
1
Discrete versus Continuous
The major distinction between a continuous and discrete random variable is the
Stat 104: Quantitative Methods for Economists
Class 15: Sampling and the Central Limit Theorem
1
You Could be Wrong
Have you ever not completed a task fully? Suppose you're a teacher's aid at school,
Stat 104: Quantitative Methods for Economists
Class 16: Confidence Intervals- One Sample Mean
1
Introduction
Say we have a population of interest and we want to determine what its mean is.
Population
Stat 104: Quantitative Methods for Economists
Class 17: Confidence Intervals- One Sample Proportion
1
What is a sample proportion?
Say we survey n people and ask them if they like the movie The Social
Stat 104: Quantitative Methods for Economists
Class 21: Confidence Intervals- Two Samples
1
Midterm Exam: October 18
7pm at night-locations to be announced Open book/Open notes Topics Include
Mean and
Stat 104: Quantitative Methods for Economists
Class 1: Introduction
1
And you want to be my latex salesman?
2
Where Am I?
Michael Parzen: Sci 300b Phone: 617-495-8711 Google Voice: 617-942-0621 Email:
Stat 104: Quantitative Methods for Economists
Class 2: Getting (good?) Data
1
One of many definitions.
Statistics is a collection of procedures and principles for gathering data and analyzing informat
Stat 104: Quantitative Methods for Economists
Class 3: Graphs and Summarizing Data-Measures of Center
1
Describing Data : Graphically and Numerically
Assuming we have generated a random sample of data
Stat 104 Midterm Exam Topics The following topics are the main ideas from the first half of the course. We will discuss this list on Monday (March 9th) in class. 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12)
Stat 104: Quantitative Methods for Economists
Class 7: Regression, a first look
1
Correlation vs. Regression
A scatter plot can be used to show the relationship between two variables Correlation analy
Stat 104: Quantitative Methods for Economists
Class 12: Random Variables, Part II
1
What were we talking about?
Random variables Mean, variance Linear transformation rule
2
Rules for Expectation and V
STATISTICS 104
Name:
FINAL EXAM SOLUTIONS
Key
Section TF/day and time:
Final Exam Solutions
Tuesday May 20, 2008
This is a closed-book exam. You may bring in three 8.5 x 11 two-sided sheets of
notes
STATISTICS 104
1
FINAL EXAM
Name:
Section TF/day and time:
Final Exam
Thursday January 22, 2009
This is a closed-book exam. You may bring in three 8.5 x 11 two-sided sheets of
notes and a calculator.