Are they positively correlated? Giving money makes you happy. Or are they negatively correlated? On this map, green will mean they're positively correlated and red means they're negatively correlated.
它们是正相关的吗?捐钱会使你变得幸福?还是说它们是负相关的呢?在这张地图上,绿色代表正相关,红色代表负相关。