Question: is 5 out of 10 good?
Answer: Think of marks in school: 5/10 is a bare pass, while 7/10 would be considered an OK result. If you are using percentiles then 5/10 would be average. It comes from grades. 10 is an A+, 9 is an A, 8 is a B (above average), 7 is a C (average), 6 is a D (below average), 5 and below is F.