Statisticians have determined that values no greater than plus or minus 2 SD represent measurements that are more closely near the true value than those that fall in the area greater than± 2SD. Thus, most QC programs call for action should data routinely fall outside of the ±2SD range....
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Product is dangling foam, so make a big total when there may be a deviation of plus or minus 20 grams of weight, it knows! 翻译结果4复制译文编辑译文朗读译文返回顶部 Gross and net weight 1 products and product pictures are for reference only and the real in the same way as specific to...
The shoulders are taken to be the upper and lower quartiles unless mean has been specified; here they will be the mean plus or minus the standard deviation. nogroup uses the actual values of yvar rather than grouping them (the default). This option may be useful if yvar takes on only ...
The cells were then incubated with PLUS or MINUS PLA probes (Sigma-Aldrich) for 1 h at 37 °C. Ligation was performed for 30 min at 37 °C using a ligase specific for PLA (Sigma-Aldrich). After ligation, the cells were incubated in a polymerase solution containing a polymerase...
The mean direct care cost for a patient diagnosed with PUO was USD 46,779, plus or minus a standard deviation of USD 20,281. The mean cost of medications and equipment, and investigations per PUO patient was USD 4533 (standard deviation USD 4013) and USD 23026 (standard deviation USD ...
often uses the plus/minus 3 SD paradigm; theSAThas a mean of 500 and standard deviation of 100, so the range is 200 to 800. The ACT exam is nominally a mean of 18 and SD of 6, hence the scores ranging 0 to 36. IQ tests tend to have a mean of 100 and standard deviation of ...
Answer to: In a normal distribution, the proportion of data points falling within plus minus 3 standard deviations from the mean is: a. 0.9974 b...
For all normal distributions, 68.2% of the observations will appear within plus or minus one standard deviation of the mean; 95.4% will fall within +/- two standard deviations; and 99.7% within +/- three standard deviations. This fact is sometimes called the "empirical rule," a heuristic th...
To determine standard deviation, take the average return of an investment over a period of time andfind its average standard deviationfor the same period.1 Normal distributions (the familiar bell-shaped curve) dictate that the expected return of the investment may be one standard deviation from th...