CHAPTER 8
Section 8.1
1. a. b. c. d. Yes. It is an assertion about the value of a parameter. No. The sample median
~ X is not a parameter.
No. The sample standard deviation s is not a parameter. Yes.
Lesson 12: Statistical Inference with Two Populations,
Goodness of Fit Test, and Independence Test
Bin Wang
Inference about , with , known
Suppose 1 is the mean of population 1, and 2 is the mean
of
Lesson 2: Descriptive Statistics:
Organizing and Displaying Data
c
Bin Wang
Questions:
Given the data, how do we organize and
display them?
What kind of graph can we use?
Answers: It depends!
Categ
Lesson 1: Introduction to Statistics
Bin Wang
What is Statistics?
Statistics is the science of collecting, organizing, analyzing,
interpreting, and presenting data.
Statistics is a way to get informat
Lesson 14: Multiple Regression Analysis
Bin Wang
Statistical Analysis for Business & Economics: Spring 2011
Multiple Regression
2
The Model
We now assume we have k independent variables
potentially re
Lesson 13: Linear Regression Analysis
Bin Wang
Statistical Analysis for Business & Economics: Spring 2011
Regression Analysis
Regression analysis is used to predict the value of one
variable (the dep
Lesson 15: Regression Diagnostics
Bin Wang
Assumptions
Check out assumptions made for model:
When basic assumptions are violated, regression results
are not valid.
The basic assumptions are:
1. Line
Class
Crew
Age
Adult
Sex
Female
Crew
First
Adult
Female
Adult
Female
Second
Third
Adult
Female
First
Second
Third
Survived
No
Yes
Female
Male
No
Yes
Male
Adult
No
Yes
Female
Male
No
Yes
Male
This file was created by CMPT_ME_BEME_RETS using the 201502 CRSP database.
It contains value- and equal-weighted returns for the intersections of 5
ME portfolios and 5 BE/ME portfolios.
The portfolio
BLcode
country
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 China
83 Ch
Class
Crew
Age
Adult
Sex
Female
Crew
First
Adult
Female
Adult
Female
Second
Third
Adult
Female
First
Second
Third
Survived
No
Yes
Female
Male
No
Yes
Male
Adult
No
Yes
Female
Male
No
Yes
Male
This file was created by CMPT_ME_BEME_OP_INV_RETS using the 201502 CRSP database.
The 1-month TBill return is from Ibbotson and Associates, Inc.
Mkt-RF SMB HML RMW CMA RF
196307 -0.39 -0.46 -0.82 0.7
Practice Free Response
Answer completely, but be concise. Write sequentially and show all steps.
1. Suppose the Richmond-Times Dispatch asks a sample of 150 Richmonders their opinions on the
quality o