Check the applicability of Chebyshev's theorem and the empirical rule for the data set in given problem.
Problem
The following data are the total 1-year return, in percent, for 10 midcap mutual funds:
0.7, 0.8, 0.1, -0.7, -0.7, 1.6, 0.2, -0.5, -0.4, -1.3
Find the median and the 20th, 30th, 60th, and 90th percentiles.