摘要：a.a.ysis of va.ia.ce (a.OVa. is a.usua. wa. for a.a.ysing experiments. However, depending on the design a.d/or the a.a.ysis scheme, it ca. be a.ha.d ta.k. ExpDes, a.ronym for Experimenta. Designs, is a.pa.ka.e tha. intends to turn such ta.k ea.ier. Devoted to fixed models a.d ba.a.ced experiments (no missing da.a., ExpDes a.lows user to dea. with a.ditiona. trea.ments in a.single run, severa. experiment designs a.d exhibits sta.da.d a.d ea.y-to-interpret outputs. It wa. developed a. the Exa.t Sciences Institute of the Federa. University of a.fena., Bra.il. Sta.le versions of pa.ka.e ExpDes a.e a.a.la.le on CRa. (Comprehensive R a.chive Network) since 2012. Ba.ed on users’ feedba.k, the pa.ka.e wa. used to illustra.e gra.ua.ion a.d post-gra.ua.ion cla.ses a.d to ca.ry out da.a.a.a.ysis, in Bra.il a.d ma.y other countries. Pa.ka.e ExpDes differs from the other R tools in its ea.iness in use a.d clea.liness of output.