Sentence examples for deviations of the background from inspiring English sources

The data were filtered by discarding spots with a reference signal lower than the background plus 3 standard deviations of the background.

To determine immunolabeling, the threshold was then set to ±3 standard deviations of the background level.

Genes whose intensities were less than the median plus two standard deviations of the background level were identified as null.

In plant VOC research, the LOD is usually calculated as a sum of the mean and three standard deviations of the background replicates (LO D = MEANblank+ SDblank * 3).

The data were filtered so that spots with a reference signal lower than the background plus two standard deviations of the background or obvious blemishes were not included in the analysis.

The absorbance read-out shows excellent linearity (R of 0.99) as a function of dye concentration with a concentration detection limit approximately 3 μM of 4-nitrophenol (corresponding to three standard deviations of the background noise).

σ B   = standard deviation of the background ROI counts, corresponding to noise in the image.

SD j  = standard deviation of the background ROI counts for sphere j.

The mean and standard deviation of the background activity within this annulus region were measured and recorded.

The detection limit was calculated as 3 times the standard deviation of the background level and ranged between 1.3 and 3.8 ppb.

The coefficient of variation (COV) is given by COV = σ bg/N bg, where σ bgis the standard deviation of the background ROI.