Answer :

An experiment that involves observations after an event is called repeatability experiment while experiments occur when conditions are deliberately altered.

The possibility that you can do the same experiment again with the same setup after obtaining a certain result from one run is known as repeatability. It allows scientists to confirm that their own findings are accurate and not merely coincidental artefacts. Similarities in the correlation coefficient (r) across approaches have been employed in earlier research as a sign of agreement. In contrast to the degree to which two procedures agree with one another, as demonstrated by Bland and Altman, actually measures the strength of the link between two approaches. This indicates that is completely worthless in this situation; it would be strange if two separate heart-rate measuring approaches weren't connected to one another.

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