Question

desmond bought supplies for a class project and brought the receipt to school. the 6 items cost: $8.00 $9.00 $7.00 $9.00 $5.00 $1.00 what was the mean absolute deviation of the prices of the items? if the answer is a decimal, round it to the nearest ten cents. mean absolute deviation (mad): $

Explanation:

Step1: Calculate the mean

The mean $\bar{x}=\frac{8 + 9+7+9+5+1}{6}=\frac{39}{6}=6.5$

Step2: Calculate the absolute - deviations

$|8 - 6.5|=1.5$, $|9 - 6.5| = 2.5$, $|7 - 6.5|=0.5$, $|9 - 6.5|=2.5$, $|5 - 6.5| = 1.5$, $|1 - 6.5|=5.5$

Step3: Calculate the mean of the absolute - deviations

$MAD=\frac{1.5+2.5 + 0.5+2.5+1.5+5.5}{6}=\frac{14}{6}\approx2.33$

Answer:

$2.33$