By looking for specific peaks and valleys in the spectrum of gamma-rays given off by a sample — even if it's hidden in a container, as many nations would require for classification purposes — it could be determined whether the sample is the enriched form required for weapons.
Researchers realised that adding luciferase and luciferin to a sample of water or food could be used to detect ATP, and thus determine whether the sample contained bacteria or other pathogens.In 1992 Dr Prasher also cloned GFP, so that it no longer had to be harvested from living creatures.
A normality test was performed to determine whether the sample had a Gaussian distribution.
One area of focus is towards using quality of the sample to determine whether the sample is suitable for classifier update.
Based on the primary school enrollment rule, the variables "birth year" and "birth month" are contrasted with the samples' current grade, so as to determine whether the sample are enrolled in school at the prescribed age.
Before clinical interpretation of the above mentioned univariate analysis results, post hoc power analysis was performed to determine whether the sample size was large enough for the findings to be statistically valid.
Post hoc power analysis was performed for the variables found to be statistically significant by univariate analysis to determine whether the sample size was large enough to be statistically valid.
The reliability of PCR amplifications may be assessed by using a statistical test to compare the proportion of successful amplifications in sample and control PCR, in order to determine whether the sample PCR success rate is significantly different from amplification rate due to contaminants.
Accordingly, we performed a compromise analysis to meet the demands of an adequate power with a given sample size and fixed effect size, to determine whether the sample sizes in the current study were sufficient to detect small differences with adequate statistical power.
For both the distance model and spatially-explicit model, deviance goodness-of-fit tests and overdispersion parameters (values ≠1 conflict with the assumption of binomial distribution) were used to determine whether the sample data followed a binomial distribution, and corrections for overdispersion were applied where needed [31].
