Newbies Question

#1
Is there a way that statistically you can determine the cut-off point.
Ex. I have a large data set looks like this ( millions of records):

Code total_sub Total percent
GGGG 10 20 50%
YYYY 1 10 10%
KKKK 15 20 75%
PPPP 44 300 15%
HHHH 9 9 100%
FFFF 123 123 100%
BBBB 22 234 9%
…..

The extract: I want remove my observation the record’s, that doesn’t have enough data available based on total_one.

For instance if assign the cut-off ( total_sub >10) point, then I will only have a these record’s in my analysis.

Code total_sub Total percent
KKKK 15 20 75%
PPPP 44 300 15%
FFFF 123 123 100%
BBBB 22 234 9%

Here is my question. Is there is a way to determine the cut-off point statistically?

Any help would appreciate.

Jimmy.