Many slowly compressed solids plastically deform with sudden slips, or jumps in the stress-strain curve . We study slip statistics, dynamics, and time series properties under a range of different experimental conditions. We discuss an analytic model and compare its predictions to recent experimental observations. Reference:  Jonathan T. Uhl, Shivesh Pathak, Danijel Schorlemmer, Xin Liu, Ryan Swindeman, Braden A.W. Brinkman,, Michael LeBlanc, Georgios Tsekenis, Nir Friedman, Robert Behringer, Dmitry Denisov, Peter Schall, Xiaojun Gu, Wendelin J. Wright, Todd Hufnagel, Andrew Jennings, Julia R. Greer, P.K. Liaw, Thorsten Becker, Georg Dresen, and Karin A. Dahmen, Universal Quake Statistics: From Compressed Nanocrystals to Earthquakes, Scientific Reports 5, 16493 (2015) and references therein. Acknowledgments: We gratefully acknowledge support through NSF grants DMR-1005209, DMS-1069224 and DOE project FE0011194 with project manager Jessica Mullen.