1.

Define Probable Error?

Answer»

It is defined as R = ± 0.6745s where s is STANDARD deviation.
Probable ERROR has been used in EXPERIMENTAL work to some extent in PAST, but standard deviation is more convenient in statistical work.

It is defined as r = ± 0.6745s where s is standard deviation.
Probable error has been used in experimental work to some extent in past, but standard deviation is more convenient in statistical work.



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