Smoothed value
Calculating the moving average of a tag is a great way to eliminate noise. This can be done easily by using the average aggregation. When the aim is to reduce noise from a tag, we should use a central aggregation (as opposed to a backwards aggregation, which would give the average over the last x time). You should aim to find an aggregation range that makes the tag sufficiently smooth, while preserving the real features in the data.
Achtung
Step changes in values will also be smoothed out, making them look like smooth transitions, which can be undesirable