已知数据25,21,23,27,29,24,22,26,27,26,25,26,25,28,30,28,29,26,24,25,在画频数分布直方图时,
问题描述:
已知数据25,21,23,27,29,24,22,26,27,26,25,26,25,28,30,28,29,26,24,25,在画频数分布直方图时,
如果组距为2,那么应该分成( )组,24.26.5这一组的频数为( ),频率是( )
答
如果组距为2,那么应该分成( 5 )组,24.26.5这一组的频数为(8 ),频率是( 0.4 )