its a factor with two pairs of the same number
no
* *
No.
enabeling factor
the definition for a controlled experiment is it test the effects of one factor
Yes, by definition a factor divides a number exactly
A factor is what the number divides into for example 4 is the factor of 8 and 2 is also the factor of 8 and so on.
controllable risk factors
A beneficial factor or combination of factors,
Yes, though that is not the definition of a factor. It is an example of a factor, however.
Both are meaning the same definition. simply you put factor beyond the safety.