A 150-unit apartment complex is infested with rats. The apartment caretaker checked 9 units and found the following number of rats {2, 5, 3, 1, 0, 3, 7, 2, 2}. What is the relative frequency of units with 3 rats?
A. 0.08
B. 0.11
C. 0.16
D. 0.22

Question

A 150-unit apartment complex is infested with rats. The apartment caretaker checked 9 units and found the following number of rats {2, 5, 3, 1, 0, 3, 7, 2, 2}. What is the relative frequency of units with 3 rats?
	A.	0.08
	B.	0.11
	C.	0.16
	D.	0.22

anonymous · Answer

can you help me with another one @vinnv226 you exllain things easier for me.

anonymous · Answer

He he he rats...

anonymous · Answer

The relative frequency of 3 rats is basically what fraction of the units have 3 rats. So, there are two units where this is the case, and there are a total of nine units. So our relative frequency is:
$$\frac{ 2 }{ 9 } = .22$$ You could also think of it as the probability of picking a unit at random and it having 3 rats.

anonymous · Answer

really?, thats all it is, just the fraction of amount of rats to rooms!?

anonymous · Answer

Lol rats