1. What is opportunity cost and what does it mean?
- alternative action. Lost salary going to college for four years,
but hope to make more due to that action
2. What are the eight guideposts to economic thinking and how to
incentives fit into thinking li
Economics 121 Principles of Microeconomics Spring 2010
Meeting Time: T and R 12:30 PM-1:45 PM Place: Room 575 Instructor: Dr. Todd Myers Telephone Number: 644-7848 Office: 508B E-mail Address: todd.myers@gcccd.edu; myerst@mail.sdsu.edu Times Available: I
Interpretation: We are _% confident that the mean of Y for many
cases of x n+1
in X will be between _ and _ .
Minitab: *insert x and y columns* Stat Regression Regression
Predict Response: y(dep) column, *insert x n+1 under
x(ind) column
OK
Prediction
y i N ( Mean , Variance )
1. Residual Standard Deviation
S
S
( xy )2
S xx
yy
SSE
^ =S =
=
n2
Interpretation: the residual standard deviation measures the typical
vertical distance of the data points from the regression line.
TI-84: *insert X-list to L
STAT 350B Formulas
I. Linear Regression and Correlation - Chapter 11:
1. Sum of squared errors:
( y i ^y i )= cfw_ yi ( 0 + 0 X i)2
2. Assumptions for Least squares:
1 , 2 , , n
i.
are independent
i N (0, 2 )
ii.
3. Residual formula:
^
y i( 0+ ^ 1 X i)
e
2
Interpretation: About r
of the total variation in y can be
explained by a linear regression model on x.
TI-84: STAT CALC LinReg(a+bx) Calculate. [appears as
r 2 ]
Minitab: STAT Basic Statistics Correlation Insert columns
(order doesnt matter) OK *Sq
Camille Santos
Professor McGann
Economics 121
9 November 2016
Sustainable Food Production: Presented by the Humane League and Hosted by Shahrokh
Shahrokhi
Animals are unique individuals that have feelings of pain, pleasure, and many other
emotions. In thi
Camille Santos
Professor McGann
Econ 120
3 May 2016
Tim Wise on White Privilege: Racism, White Denial, and the Costs of Inequality by Professor
Brian Jennings
A white man in Utah enters a liquor store, looking dirty, homeless, and like he hasnt
taken a sh
Camille Santos
Professor McGann
Econ 120
3 May 2016
Economics of Health Care by Professor Shahrokh Shahrokhi
The signs of a good healthcare in a country include factors such as life expectancy and
infant mortality rate. The United States lags behind many