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Apologies if this is a simple question, this is my first time here, and I am a noob at statistics. I have a series of numbers and I want to find cutoff points that clearly separate, or group, the data.

Say I have this data:

enter image description here

You can see it is clearly grouped into two groups, the large values, and the small values. (Maybe 3 groups, with that first positive value being a group of its own.)

Is there any algorithm to determine these groups automatically/programmatically?

john ktejik
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  • Did you ever find a solution? I'm guessing there's a term for this that I'm just not aware of. I have the same problem. I'm basically trying to group power readings into "device on" and "device standby" groups, but they can overlap with different devices. – William T. Mallard Mar 11 '20 at 04:58

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I don't know if you eventually found it, but this source was helpful to me: https://www.real-statistics.com/multivariate-statistics/cluster-analysis/jenks-natural-breaks/

ANdrew
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