Figure 6

Post- vs pre-move number and fraction of calls. These plots show the post- vs. pre-move means of the (a) number of calls (log scale) and (b) fraction of calls (logit scale). Green circles refer to the train set and orange squares refer to the test set, while the dashed line corresponds to the \(y=x\) line. Note the clear linear trend and the considerable variance about the \(y=x\) line, indicating that although the pre-move value alone may give a rough estimate of the post-move value, it may not be enough to determine if the post-move value will be higher or lower than the pre-move value (above or below \(y=x\))