Spread vs. Level plot of血原卟啉 均数与标准差二维图 两项对应指标均成比例 0000 各格子总体方差不齐同 Spread vs. Level plot of血原卟啉 Level(Mean) Groups:厂别*性别 均数与方差二维图 Level (Mean) Groups:厂别*性别Spread vs. Level Plot of 血原卟啉 Groups: 厂别 * 性别 Level (Mean) 20 40 60 80 100 120 140 160 180 Spread (Standard Deviation) 40 30 20 10 0 Spread vs. Level Plot of 血原卟啉 Groups: 厂别 * 性别 Level (Mean) 20 40 60 80 100 120 140 160 180 Spread (Variance) 1200 1000 800 600 400 200 0 均数与标准差二维图 均数与方差二维图 两项对应指标均成比例， 各格子总体方差不齐同