Circular standard deviation

Circular standard deviation is a way of measuring the spread of data when talking about a circular shape, such as points on a clock. It measures how far away each point is from the others, like a family standing in a circle and measuring how far away other family members are from each other. To calculate circular standard deviation, you first add up all the angles between the points and then divide that sum by the number of points in the circle. That number tells you how far away each point is from the others on average, which is the circular standard deviation.