tahirawan11
Involved In Discussions
Hi,
I have a production process where 100% of machines are tested for ‘airflow’ using an automated measurement system. And a small number of machines 5% are also re-checked manually to see if the 'automatic testing' and 'manual testing' yield the same results. In order to check the consistency of both the results, I plan to do a ‘simple correlation’ analysis. And if the ‘Coefficient of correlation’ is higher than 0.5 then I would conclude that both the ‘automatic’ and the ‘manual’ measurement systems are consistent. I do not want to compare one machine against the other but just want to compare the results of the two measurements systems.
The raw data is attached below and the coefficient of correlation is – 0.241.
Can I conclude that there is no correlation between the results of the two measurement systems? Are there any suggestions to use other tools than simple correlation analysis or other ways to conduct the same study?
automated_testing manual_testing
18,4 18,9
18,1 19,4
18,3 17,8
18,1 18,7
18,2 17,2
18 17,1
18,2 16,3
18,1 17,8
18,1 18,1
18,2 18,2
18,2 17,6
18,2 18,5
18,4 16,1
18,3 18,4
18,2 14,8
18,2 18,8
18,1 17,6
18,1 18,4
18 18,8
18,4 18,5
18,2 19
18,2 18,8
18,3 19,3
18,3 19
18,1 18,2
18,2 17,2
18,1 18,9
18,1 19,8
18,3 20
thanks
I have a production process where 100% of machines are tested for ‘airflow’ using an automated measurement system. And a small number of machines 5% are also re-checked manually to see if the 'automatic testing' and 'manual testing' yield the same results. In order to check the consistency of both the results, I plan to do a ‘simple correlation’ analysis. And if the ‘Coefficient of correlation’ is higher than 0.5 then I would conclude that both the ‘automatic’ and the ‘manual’ measurement systems are consistent. I do not want to compare one machine against the other but just want to compare the results of the two measurements systems.
The raw data is attached below and the coefficient of correlation is – 0.241.
Can I conclude that there is no correlation between the results of the two measurement systems? Are there any suggestions to use other tools than simple correlation analysis or other ways to conduct the same study?
automated_testing manual_testing
18,4 18,9
18,1 19,4
18,3 17,8
18,1 18,7
18,2 17,2
18 17,1
18,2 16,3
18,1 17,8
18,1 18,1
18,2 18,2
18,2 17,6
18,2 18,5
18,4 16,1
18,3 18,4
18,2 14,8
18,2 18,8
18,1 17,6
18,1 18,4
18 18,8
18,4 18,5
18,2 19
18,2 18,8
18,3 19,3
18,3 19
18,1 18,2
18,2 17,2
18,1 18,9
18,1 19,8
18,3 20
thanks