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    Target Accuracy and Precision

    This is awesome. And shortly after writing the post I came to the same conclusion as you, it’s difficult to calculate with formulas and could be easier with a simulation. Did you create a spreadsheet that runs this simulation? Could you help me create one that does? I was obsessing over this...
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    Target Accuracy and Precision

    Group sizes never decrease, they can only get bigger or stay the same. It’s not hard to “get lucky” and shoot 3 right next to each other that measure .3” maximum diameter. But it’s rather difficult to do it 20 times in a row and have it measure less than .5” I think it’s one of the flaws when...
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    Target Accuracy and Precision

    Yes, there are several on the market now. The one I use makes you select a couple points to calibrate distances. Then choose the point of aim, then select locations for impacts. Example is attached.
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    Target Accuracy and Precision

    I fully expect to have to do some sort of calculation. I’m trying to work with one of the phone app programmers to have this additional information included with the group size (MOA) that they provide. As @Miner stated earlier, a confidence level or some other attribute (maybe histogram...
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    Target Accuracy and Precision

    Would this be a better calculation... CV = (Standard Deviation of the shots distance to group center) / (the average shot distance to the group center)
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    Target Accuracy and Precision

    I found some info on measuring the Coefficient of Variation. Let me know if this works for my application... Take measurements of the shots variation from the center of the group. Use that to estimate the standard deviation of distance from center then divide the number of shots by that...
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    Target Accuracy and Precision

    I’m a novice when it comes to applying statistics to practical applications. Sorry if this has been covered in another post somewhere. I compete in competitions where accuracy and precision is compared between two competitors. My question is... How many shots at a target are required to...