elena lists the ages of all of the family members who live in her house below. what is the mean absolute…
elena lists the ages of all of the family members who live in her house below. what is the mean absolute deviation (mad) of their ages? 9, 13, 43, 55
Answer
Explanation:
Step1: Calculate the mean
The mean $\bar{x}=\frac{9 + 13+43+55}{4}=\frac{120}{4}=30$.
Step2: Calculate the absolute - deviations
$|9 - 30|=21$, $|13 - 30| = 17$, $|43 - 30|=13$, $|55 - 30| = 25$.
Step3: Calculate the mean of the absolute - deviations
$MAD=\frac{21+17+13+25}{4}=\frac{76}{4}=19$.
Answer:
19