#1. Find the mean of the sample.
\(\frac{-1}{5}, \frac{5}{2}, 0\)

#2. Find the median of the sample.
\(18, 1, 1\)

#3. Find the mode of the sample.
\(6, 3\)

#4. Find the range of the sample.
\(1, 6, 6, 7\)

#5. Find the lower quartile of the sample.
\(-3, -2, 0, \frac{1}{3}, 1, 1, \frac{4}{3}, \frac{3}{2}\)

#6. Find the lower quartile of the sample.
\(1, 4, 10\)

#7. Find the upper quartile of the sample.
\(-2, -1, 7, 9, 9\)

#8. Find the upper quartile of the sample.
\(3, 9, 6, 4, 6\)

#9. Find the inner quartile range (IQR) of the sample.
\(3, 8, 10\)

#10. Find the inner quartile range (IQR) of the sample.
\(-10, -7, -5, -5, 3, 5, 5, 6, 7, 7\)

#11. Find the mean absolute deviation (MAD) of the sample.
\(6, 10\)

#12. Find the mean absolute deviation (MAD) of the sample.
\(5, 7, 2, 4, 6\)

#13. Find the mean absolute deviation (MAD) of the sample.
\(-2, -2, -1, -1, -1, 0, 3\)

#14. Find the mean absolute deviation (MAD) of the sample.
\(-10, -4, -1, 4, 7\)