Find the average value of $0$, $2z$, $4z$, $8z$, and $16z$.
I need to find the sum of these numbers and divide by the number of numbers. The sum is $0 + 2z + 4z + 8z + 16z = 30z$. There are five numbers, so I divide by $5$. The average value is $\frac{30z}{5} = 6z$. 