2017年11月1日 · “Three st.dev.s include 99.7% of the data” You need to add some caveats to such a statement. The 99.7% thing is a fact about normal distributions-- 99.7% of the …

2017年8月12日 · I have a data set. It's biological material. I have put in my standard deviations and I can see that all of my data bar 2 data points are within 3sd of the mean. Is it accepted …

2022年5月2日 · Removing outliers (by column) above 3 standard deviations of the median in R with multiple columns in a time series. I want to remove the row that has an outlier. In the …

2019年3月25日 · I have a dataset with participant IDS and 17 different measures for each participant. I need to remove outliers- numbers that are 3 standard deviations away from the …

Following my question here, I am wondering if there are strong views for or against the use of standard deviation to detect outliers (e.g. any datapoint that is more than 2 standard deviation …

2017年3月21日 · +3SD (standard deviation) If this is your first visit to the Blackjack Forum , be sure to check out the FAQ by clicking the link above. You will have to r e g i s t e r (free) before …

2020年2月19日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …

2015年1月16日 · R doesn't understand double inequalities like A < B < C as < and its family are binary operators. Hence, the above should be translated to A < B & B < C to be syntactically …

NumPy's std yields the standard deviation, which is usually denoted with "sigma". To get the 2-sigma or 3-sigma ranges, you can simply multiply sigma with 2 or 3:

2021年3月21日 · I am confused - the mean+-3SD doesn't make any sense for multiplicative distribution on the untransformed scale, so it seems it's on the log scale, which means we use …