setence: One in 10 test steps, I found one error

English as a Second Language English Vocabulary, Grammar and Idioms
1

Is it correct to say:
“One in 10 test steps, I found one error”

I mean, if there are a total of 10 test steps, atleast 1 test step will definitely have error.

Regards,
Suresh

2

This would make your meaning clearer:
I found an error in at least 1 out of every 10 test steps.