DislikedThe Bands take the same number of samples (candles/bars) for estimating the mean (moving average) and the standard deviation (bands).Ignored
DislikedSMA calculates (a+b+c+d+e+f+g)/7, which is fine, and attributes it to price g, which is not correct.Ignored
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I fail to see any attribution.
As for the confidence interval, to me that says only that it is advised to use larger samples, i.e. 200 instead of 20 (using your examples). But it doesn't say that we should use 20 values for calculating the average and use 200 values to calculate the SD, starting from the "middle" value of the smaller sample. (I can only refer back to my example of using prices of 12-3 vs. the average of 5-0.)
One of us is really missing something here.
Even if you fall on your face, you're still moving forward.