


# Example 7: Correlating two samples

You measured the strength of a spring at a breaking point based on the pressure at which it was produced. Your assumption is that breaking strength is correlated to pressure.
 
Question: Are the two variables linked/dependent? 
![Correlation entre deux variables](baseUrl/inferentielles/ex7/Correlation-entre-deux-variables.png)

## Which test do you choose? 

Left hand table: Depending on the comparison to be carrid out This test does not appear in left hand table. 

Right hand table: Depending on the types of variables Y is the result of the resistance measurement (quantitative) based on (X) a measure of production pressure (quantitative).  The test you should choose is simple regression. 

![Choix-du-test-3](baseUrl/inferentielles/Choix-du-test-3.png)

To analyze the data, enter the values by organizing them into two columns. 

![Donnees](baseUrl/inferentielles/ex7/Donnees.png)


## Result :

![Resultat test statistique](baseUrl/inferentielles/ex7/Resultat-test-statistique.png)

Based on the regression test, the correlation between pressure and resistance is not significant.  We can, therefore, not conclude that production pressure has an impact on a product's resistance. 

Benutzerhandbuch

Example 7: Correlating two samples

Which test do you choose?

Result :

Eine Komplettlösung für Industrie 4.0