- Statistics (Mean, Median, Mode, Standard Deviation)Choice C
$$ Cost\ of\ doll=\$6 $$
$$ Mean\ of\ 4\ items=\frac{15}{4}=\$3.75 $$
$$ \therefore \$6-\$3.75=\$2.25 $$
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$$ Cost\ of\ doll=\$6 $$
$$ Mean\ of\ 4\ items=\frac{15}{4}=\$3.75 $$
$$ \therefore \$6-\$3.75=\$2.25 $$
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