Practical Example of Harmonic Average

Haven’t seen this much, but it’s in an LOS. Can someone give a practical example of when you’d use the harmonic average?

Dollar cost averaging, thats about it.

So in terms of where we see that elsewhere in the curriculum, I guess index valuation is may the only place we see it?

I think so. The only question I could see is something regarding avg price paid over a time period…pretty minor I wouldnt spend too much time on it.