Average of multiple vectors

The mean of a set of vectors is calculated component-wise. In other words, for 2D vectors simply find the mean of the first coordinates and the mean of the second coordinates, and those will be the coordinates of the mean vector.

Not sure about this. Let's say we have 3 equally-spaced vectors all of equal length V. They are at 10 deg, 40 deg, 70 deg to the x-axis. Sum the x components and then the y components, then divide each by 3. Then find the resultant. Resultant magnitude is 0.91V, resultant direction is 40 deg. Intuitively, the resultant should be V. If we sum the magnitudes of the vectors and the directions and then divide by 3 we get the correct answer.

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