Chapter three day three
This presentation is the property of its rightful owner.
Sponsored Links
1 / 9

Chapter Three Day Three PowerPoint PPT Presentation


  • 36 Views
  • Uploaded on
  • Presentation posted in: General

Chapter Three Day Three. Least Squares Regression. Homework. P. 204 29,30,31,32. Regression line requires one variable be an explanatory variable and the other be a response variable. Correlation makes no distinction. Example.

Download Presentation

Chapter Three Day Three

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


Chapter three day three

Chapter Three Day Three

Least Squares Regression


Homework

Homework

  • P. 204 29,30,31,32


Chapter three day three

Regression line requires one variable be an explanatory variable

and the other be a response variable.

Correlation makes no distinction


Example

Example

  • Some people do not gain weight even when they overeat. Perhaps fidgeting and other “nonexercise activity” (NEA) explains why.

  • Some people may spontaneously increase nonexercise activity when fed more.

  • Researchers deliberately overfed 16 healthy young adults for 8 weeks.

  • They measured fat gain (kg) as response to change in NEA (cal)


Chapter three day three

Data


Who what why when where how and by whom

WHO? WHAT? WHY? WHEN, WHERE, HOW and by WHOM?

  • Who:

  • What:

  • Why:

  • When, where and by whom:


Chapter three day three

Give the regression line:

Interpret the slope:

Interpret the y-intercept:

Give and interpret the correlation:


Chapter three day three

Interpolation is the useof a regression line for prediction inside the range of values of the explanatory variable x used to obtain the line.


  • Login