# The mean and standard deviation of a set of data

- Topic:
- Means, Standard Deviation, Statistics

The picture shows a collection of data spread out upwards so you can see the individual points. The mean is shown by the red line and the standard deviation is shown by the blue arrows.
You can move the points back and forth and see what happens to the mean and standard deviation.
You can change how many points are in the data set by moving the slider up and down.