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# basicquestion

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A survey was conducted regarding the number of automotive vehicles owned per household. The results of the survey are as follows: $$\begin{array}{c|c} \text{Vehicles}&\text{Households}\\ \hline 0&3\\ 1&9\\ 2&10\\ 3&2\\ 4&1\\ \end{array}$$Express the average number of vehicles per household as a decimal rounded to the nearest tenth.

Apr 18, 2018

#1
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We have  a weighted average here :

[ Number of vehicles  ]  / [ Number of households  ]  =

[ 3*0   +  9*1 + 10*2  + 2*3  + 1*4  ]  / [ 3 + 9 + 10 + 2 + 1  ]  =

[ 0 + 9 + 20 + 6 + 4  ]  / [ 25 ]   =

[ 39 ] /  [ 25 ]   =

1.56   =  1.6  venicles per household

Apr 18, 2018
#2
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Thanks so much, CPhill!

tertre  Apr 18, 2018