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Rifles, Reloading, Optics, Equipment
Reloading
Blackpilled by Hornaday #50, #52 - Statistics with Ontarget TDS and Taran
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<blockquote data-quote="btuley" data-source="post: 2970790" data-attributes="member: 125939"><p>Interesting. Yes, St. Dev calculated on the diameter instead of radius was right on (they label it SD Radius, so error there). I checked with another target group and that is off by 17% though, so still issues.</p><p></p><p>I'm familiar with CEP as a description of system capability. However, I haven't been able to find any methods for comparing two different CEPs to gain confidence that two are statistically different. I understand if you are delivering a weapon system to a customer and you've defined a test and the results are a certain CEP or below you are good. But that's not directly related to the question of load development and two different treatments. I can imagine someone has defined a test for a statistical difference between two CEP's but I haven't been able to find that formulation. Are you aware of one?</p></blockquote><p></p>
[QUOTE="btuley, post: 2970790, member: 125939"] Interesting. Yes, St. Dev calculated on the diameter instead of radius was right on (they label it SD Radius, so error there). I checked with another target group and that is off by 17% though, so still issues. I'm familiar with CEP as a description of system capability. However, I haven't been able to find any methods for comparing two different CEPs to gain confidence that two are statistically different. I understand if you are delivering a weapon system to a customer and you've defined a test and the results are a certain CEP or below you are good. But that's not directly related to the question of load development and two different treatments. I can imagine someone has defined a test for a statistical difference between two CEP's but I haven't been able to find that formulation. Are you aware of one? [/QUOTE]
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Blackpilled by Hornaday #50, #52 - Statistics with Ontarget TDS and Taran
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