什么是准实验设计

来源:学生作业帮助网 编辑:作业帮 时间:2024/10/20 00:54:05
xXmR"IJgfgw#{ ( # ]WؗEӂcc0TeV˗\ܾ%+N4vsϿ<l~VE sZzfd;)_ VYWMȓ?b*ٴ^ 3SV흺-\YZ8}kɛI6E+':흋a8Lx[AxBo}.,Ypv?ؒ{u:a#Ga=gzM}J{s8M5!ȖX Dz2"KaKPuZ,ZD;#ވ~0V/FՈf; wp aLJ;ao {Kc(H%''c tt)r&`KQ*.3t # &SoMLw' AT9tMwTOHqXߚMFZvÏ;Nvr(Ή=` R! -Dh4B]suٸo/p\8yS<EM=eWwg {B8#>mіOϣ)wM!y ݛJ"`Ң/4 vp ~+!( 8d%H7D>%} z(,@~(Ml6ĜJ-%cp1iambe9jr'81{IayF)qǰ@p&Kux63ڲ@D~_X; 2ޯrKܥ6V[R4@3j B"}xG+#:uR/g (T5g,KhJYR3Vj̡ ¥yfk JxM+qBEKU, ;^fҎEw/VIX1C}7KBK>>!B!ߩzR,ρeL˩eñ^V\?8u` 6kqü`^SE}T9xDw%&º4E+oSf.y YڡX|{0,4'r0ܧ)(@SkZm*9Dx6ݠߣEo6u XLYf: a&/6y<\k D0*tB%.jOPG( ]"Ɠ4 Y>Z NkSm-|RrX:͢]xRIٽ,:o(J@a۾t4 cY~`tH''}'%n>m/ܑMGs)ȱ0koh{ڪbW<38o}at 9EDu'3vK.4;6LxR5q<*Fx58n44»55dԹ"U7x2q1b̦8;槺 IP|VʻH$U#rTaož^ٱttǦ[ͬx) Jt1,RU:̸5S L⇇{G >g9 `/=6ꙏz*L]#t}1 ٰ_XGaⵚ'k yqwl+p vk54]P}~py8"TŚ>'{|L4