A.單因素被試間設(shè)計(jì)B.單因素組間設(shè)計(jì)C.單因素被試內(nèi)設(shè)計(jì)D.單因素完全隨機(jī)設(shè)計(jì)
A.1B.2C.3D.4
A.30B.50C.100D.300