The weight (grams) of meat in a pizza product produced by a large meat processor is measured for a sample of $n=20$ packages. The ordered values are (Courtesy of Dave Brauch)

\[
\begin{array}{ccccccc}
16.12 & 16.77 & 16.87 & 16.91 & 16.96 & 16.99 & 17.02 \\
17.19 & 17.20 & 17.26 & 17.36 & 17.39 & 17.39 & 17.62 \\
17.63 & 17.76 & 17.85 & 17.86 & 17.91 & 18.00 & 19.00 \\
\end{array}
\]

(a) find the quartiles;

(b) find the minimum, maximum, range, and interquartile range;

(c) find the 10th percentile and 20th percentile.