146,148,150,154,148,158,148,160,141,148这组的平均数是( )
问题描述:
146,148,150,154,148,158,148,160,141,148这组的平均数是( )
答
150.1.算成10个150就是1500-4-2+4-2+8-2+10-9-2+=1501/10
146,148,150,154,148,158,148,160,141,148这组的平均数是( )
150.1.算成10个150就是1500-4-2+4-2+8-2+10-9-2+=1501/10