CR also uses their own tests and maintenance records.
There are definitely flaws with self reporting but it’s just a data source with its limitations.
Statistical validity is based on what is done with the data, not whether it’s self reported or measured accurately. What you may be thinking of is whether their study or logic is sound.
There are definitely flaws with self reporting but it’s just a data source with its limitations.
Statistical validity is based on what is done with the data, not whether it’s self reported or measured accurately. What you may be thinking of is whether their study or logic is sound.