20以内三连减口算练习题(已排版)时间:错误率:18-4-8=12-4-6=20-18-1=13-3-6=7-2-5=11-6-2=14-3-9=19-8-3=19-7-11=18-...
20以内减法口算练习题4000题时间:错误率:17-9=13-1=14-7=14-14=3-2=19-17=18-16=16-4=11-11=10-7=12-7=2-2=15-3=8-2=13-2...
I2from18%to46%.However,I2valueslessthan50%areusuallyconsideredasexhibitingmoderateheteroge-neity,andafixed-effectsmodelcouldbecons...
Meta-analysisofresultsfromstudiesofvariablerisksofbiascanresultinfalsepositiveornegativeconclusions.Takingtheseremarksintoconsider...