manually remove outliers
On many charts, one anomalous reading (and outlier) can skew then entire chart scale, making the real data practically unreadable. I would like to be able to manually remove data points from the chart.
Luckily our new graphing library since this suggestion was created does a much better job of scaling the y axis to keep data points readable.
In terms of data, we want to be careful about allow people to discard a measurement.
However, we are moving to allowing users to use Median, min, max, or average when graphing data, which will limit the skew of outliers
I would take this suggestion a step further to automatically remove outliers to avoid skewing the entire chart scale.