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Data 2

Published on Nov 21, 2015

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PRESENTATION OUTLINE

1.

Data 2

Linear regresion
Photo by A.Currell
2.

Correlation Coefficient
Regression line

Photo by eldeeem
3.

Perfect?

  • -1 negative
  • 0 no
  • +1 positive
Photo by Radio Bemba! SoundSystem
4.

Correlation / Regression

  • What topic are we doing?
  • How many variables?
  • Check "Lists"
  • Equation of a line
Photo by koalazymonkey
5.

Extrapolation

outside the data set - less accurate
Photo by konstriktion
6.

Interpolation

Inside the data set - more accurate
Photo by Eva the Weaver
7.

Line of best fit

  • find the mean
  • find the correlation coefficient
  • Line of best fit
Photo by ThatswhatIam
8.

What does r tell you?

relationship...
Photo by flickrPrince

Nic Boardman

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