Using the data on the$$ right, find the average sales of the toy store chains$($in $$1000)?$

a$.$ The overall average sales per store is $$$

$$

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$($rounded to the nearest whole$$ number.$)$

Chain

$$# of Stores

Avg.$$ Sales$/$Store

$($$ $000)$

Toys$\text{'}$R$\text{'}$ Us

$141$

$7$ comma $239$

Child World

$77$

$3$ comma $589$

Kaybee

$366$

$506$

Lionel

$53$

$3$ comma $239$

b$.$ The median of sales$$ is:$$ $

$$

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c$.$ The overall average sales per chain is$($rounded to the nearest$$ integer$)$ is $$ $

$$

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