$np=7(0.8)=5.6 \uparrow 6$ The $80$-th percentile is $197$. 
The following are the weights (in pounds) of seven people: $100, 115, 135, 140, 180, 197, 230$. Find the $80$-th percentile. 
Options:
[a] $$100$$ 
[b] $$135$$ 
[c] $$197$$ 
[d] $$230$$ 
[e] $$185$$ 