Question

The table shows the number of pets houses have in a neighborhood. What is the average number of pets per house (round to the nearest tenth)?

A) 2.3
B) 2.5
C) 2.6
D) 11.4

Answer 1

the answer is 2.5

Explanation:

add 4+3+2+1=10

add 2+1+8+10+4=25

divide 25÷10= 2.5

Answer 2

Answer: B ) 2.5

Explanation:

Let x be the number of pets and f represents the frequency .

The formula to find average (mean) is given by :-

`\overline{x}=(\sum fx)/(\sum f)`

Then for the given data, the average number of pets per house is given by :-

`\overline{x}=(0*2+1*1+2*8+3*10+4*4)/(2+1+8+10+4)\\\\\Rightarrow\ \overline{x}=(63)/(25)=2.52\approx2.5`

Hence, the average number of pets per house =2.5