Econ 103
UCLA, Fall 2010
Problem Set 3 Solutions by Anthony Keats and Sarolta Lacz
Part 1: True or False and explain briey why. 1. The assumption that E (ui | Xi = xi ) = 0 says that the expected valu
Econ 103
UCLA, Fall 2010
Problem Set 2
Due: Thursday, October 14 in hardcopy at the beginning of class Note: Please attach the Homework Cover Page from Classweb to the front of your homework. Part 1:
Date
- all -
Sum - Sales (in Units)
Store
Atherton
Belvedere
Del Monte Forest
Diablo
Fairbanks Ranch
Hidden Hills
Hillsborough
Indian Wells
Los Altos Hills
Malibu
Monte Sereno
Montecito
Newport Coast
Assumptions
2.50% Quarterly growth, units sold
0.50% Cost escalation, quarterly (for "Unit Material Cost" and "Unit Labor Input
22% SG&A as % of Revenue
30% Tax rate
Q1
Units
Avg Price
Revenue
Q2
$
10
801'14
Willard has just been given a 7-question multiple-choice quick quiz in one of his classes- Each
uestion has ve answers onl one of which is correct- Since Willard has not attended class
recent
Given the table below, what value of y results in a valid probability distribution?
x u 1 2
P(x) 0.25 0.45 y
y=0.15
- y=0.3
y=-1.85
-y=1.85
-y=0.6
1 out of 1
Yes, that is correct!
90f14
Privacy is a concern for many users of the internet. One survey showed that 59% of Internet
users are somewhat concerned about the condentiality of their email. Based on this
information, what i
Use the table below to determine if this is a probability distribution:
Yes. this is a probability distribution because it has 6 categories.
- No, this is not a probability distribution because it doe
A super shopper is dened as a shopper for whom at least 70% of the items purchased were on
sale or purchased with a coupon. Recently collected data are given below. (7 points)
A e ran e, ears 14 24 25
Irl ble'IE ij S . fijfl _ j
A. The number of tables sold at a furniture store
B. The time required for a runner to nish a marathon
c. The number of sh caught by a shing boat
D. The number of trafc acc
For Questions 7 and 8 use the Binomial Probability Appendix A, Page 769 of your
Textbook
Assume that 70% of the cars on a particular freeway are traveling faster than 70 miles per hour.
A random sampl
12 of14
A large bank vault has several automatic burglar alarms. The probability is 0.8 that a single
alarms that would detect a burglar?
14
'- 16
. 12
- 13
15
1 out of 1
Yes, that is correct!
A super shopper is dened as a shopper for whom at least 70% of the items purchased were on
sale or purchased with a coupon. Recently collected data are given below. (7 points)
Ae rane, ears 18 28 29
Questions:
1.What percentage of songs in the dataset made it to the Top 10? 14.72%
i.e. what is the base model? Is this base model a good strategy for a record
company to follow when deciding whether
PPD
558
Multivariate Statistical Analysis
John A. Romley
Sol Price School of Public Policy
University of Southern California
Class 4 Multicollinearity, Autocorrelation
and Heteroscedasticity
Multicoll
Goodness of t Yi = Yi Yi = Yi + Yi Yi Yi Y = Yi Y + Yi Yi Square both sides, (Yi Y )2 = (Yi Y )2 + (Yi Yi )2 + 2(Yi Y )(Yi Yi ) And then sum over all of i,
n n n n
(Yi Y )2 =
i=1 i=1 n i=1 (Yi Y n
(Y
Introduction to Stata1 This handout contains basic material that will be used during this quarter. Opening Stata Open Stata by going to Start, Programs, Stata, Intercooled Stata. You will see 4 window
Review of Statistics Basic concepts
Population Group of interest. Random variable variable/feature of interest (about the population). It may dier for every individual, therefore, it is called a vari
Week 3 questions
Use the sample dataset (wage.dta) 1. Run a regression of wage on education (educ). 2. Interpret the slope and the intercept of the estimated regression line. 3. Is the slope coecient
Week 4 Answers
1. Run a regression of ahe on female. reg ahe female
Source | SS df MS -+-Model | 5995.00582 1 5995.00582 Residual | 275747.817 5909 46.6657331 -+-Total | 281742.822 5910 47.6722204
Num
Econ 103
UCLA, Fall 2010
Problem Set 3
Due: Thursday, October 21 in hardcopy at the beginning of class Note: Please attach the Homework Cover Page from Classweb to the front of your homework. Part 1:
Econ 103
UCLA, Fall 2010
Answers to the Problem Set 1 by Dmitry Plotnikov
Part 1: True or False and explain briey why. 1. The expected value of a discrete random variable is the outcome that is most l
Econ 103
UCLA, Fall 2010
Problem Set 2 Solutions by Joe Kuehn
Part 1: True or False and explain briey why. 1. To obtain the slope estimator using the least squares principle, we divide the sample cova
Introduction
Exploratory Data Analysis
Basic Tests
Advanced Statistical Methods - PSTAT 220A
Yuedong Wang
Department of Statistics and Applied Probability
University of California-Santa Barbara
Part I
Linear Models Estimation Inference Diagnostics Transformations Variable Selection Analysis of Variance Analysis of Covaria
Advanced Statistical Methods - PSTAT 220A
Yuedong Wang
Department of Statisti
Econ 103 Stata Overview (Matthew Baird)
Introduction Stata is a command based statistical software. You can use the buttons to get most of what you want done, but this wont lend itself to repetition