Power BI散点图平均线

Question

我试图获得一条平均线，该线取散点图中所示的点的平均值。我正在使用切片器和SWITCH公式的组合。

问题将出在“平均风险评级过滤器”的平均行中。当我单击“奖励2”时，它给了我正确的平均线1.92。但是，当我单击“奖励1”时，它仍然给我平均线1.92。它应该给我1.67，这是散点图中显示的2点的平均风险等级（项目1和2，因为项目3和4没有奖励1的值）。

Average Reward 1 = AVERAGE(Sheet1[Reward 1])
Average Reward 2 = AVERAGE(Sheet1[Reward 2])
Reward Selection = SWITCH( TRUE(), VALUES('Dynamic Reward'[Dynamic Reward]) = "Reward 1", [Average Reward 1], VALUES('Dynamic Reward'[Dynamic Reward]) = "Reward 2", [Average Reward 2], BLANK())
Average Risk Rating = (SUM(Sheet1[Risk Rating 1]) + SUM(Sheet1[Risk Rating 2]) + SUM(Sheet1[Risk Rating 3]))/ (COUNT(Sheet1[Risk Rating 1]) + COUNT(Sheet1[Risk Rating 2]) + COUNT(Sheet1[Risk Rating 3]))
Average Risk Rating Filter = CALCULATE([Average Risk Rating], FILTER('Dynamic Reward', 'Dynamic Reward'[Reward Selection] > 0))
 

我知道解决方案应该在“平均风险评级过滤器”的DAX公式中，但是我似乎找不到正确的DAX公式。