week2 Final Analysis .pdf

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Original filename: week2_Final_Analysis.pdf
Author: Goncalves, Luis (KWLIB)

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Qui-Square post hoc paired comparisons
Africa

America

Asia

Europe Oceania

Africa

*

America

0,0001

*

Asia

0,0517

0,0374

*

Europe

0,0001

0,0001

0,0001

Oceania

0,0001

0,176

0,0008 0,0009

Number of comparisons:
Defaul p-value:
Adjusted p-value:

10
0,05
0,005

Ajusted with Fisher test (optional test, not required for this course)

*
*

Africa

America

Asia

Europe

Africa

*

America

0,0001

*

Asia

0,0467

0,0374

*

Europe

0,0001

0,0001

0,0001

*

Oceania

0,0001

0,176

0,0004

0,0009

Oceania

*

Only one comparison has significativly changed with
the FISHER Test

In these categories we need to use the exact Fisher test because the Qui-Square may not be valid in some cases (in the QuiSquare test there is some cells with less than 5 observation and it makes the Qui-Square test not valid) (this is not required
in the course, it's just an complementary analysis)

Analysis:

We reject H0 because the is a difference between some of the categories, ir means, some means are different thean others. As conclusion, of the result
obtained in the right hand side table we can say that Europe and Africa are in the same group and the others are in diferent groups.


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