econ 0160 w professor berkowitz
Download
Skip this Video
Download Presentation
Econ 0160-W, Professor Berkowitz

Loading in 2 Seconds...

play fullscreen
1 / 42

Econ 0160-W, Professor Berkowitz - PowerPoint PPT Presentation


  • 138 Views
  • Uploaded on

Econ 0160-W, Professor Berkowitz. Lecture 1 (chapters 1 and 2) For course information click onto www.econ.pitt.edu , go to the faculty pages, click onto Daniel Berkowitz’s page and follow the links.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Econ 0160-W, Professor Berkowitz' - amery-floyd


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
econ 0160 w professor berkowitz
Econ 0160-W, Professor Berkowitz
  • Lecture 1 (chapters 1 and 2)
  • For course information click onto www.econ.pitt.edu, go to the faculty pages, click onto Daniel Berkowitz’s page and follow the links.
  • For the next class, read over chapter 2, and do all of the problems in chapter 2 listed in problem set 1
initial look at the data you should already know how to interpret this table
Initial look at the data:(You should already know how to interpret this table)
  • This table doesn’t tell us anything about the relationship between test scores and the STR.
slide7
Do districts with smaller classes have higher test scores? Scatterplot of test score v. student-teacher ratio

What does this figure show?

slide8
We need to get some numerical evidence on whether districts with low STRs have higher test scores – but how?
initial data analysis compare districts with small str 20 and large str 20 class sizes
Initial data analysis: Compare districts with “small” (STR < 20) and “large” (STR ≥ 20) class sizes:

1. Estimation of  = difference between group means

2. Test the hypothesis that  = 0

3. Construct a confidence interval for 

b moments of a population distribution mean variance standard deviation covariance correlation
(b) Moments of a population distribution: mean, variance, standard deviation, covariance, correlation
ad