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Second, from this expanded sample a random sub-sample of the size of the original sample is drawn with replacement.
The method is based on the observation that to sample a random variable one can sample uniformly from the region under the graph of its density function.
First, RF++ grows each tree on a bootstrap sample (a random sample selected with replacement) at the subject-level rather than at the replicate-level of the training data.
For each sample, a random data set was produced by shuffling the genomic positions of the data, and an identical search was conducted.
In brief, those who attended a testing site at baseline underwent a physical examination, which consisted of a fasting blood sample, a random spot urine morning collection and a standard 75-g oral glucose tolerance test.
In 2006 among all women who provided one urine sample, a random sample of 100 women was taken and analyzed for organophosphorous pesticide, BPA, and phthalate levels (Ye et al. 2008).
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Third, our study group was a convenience sample, not a random sample.
By contrast, the Norwegian sample was a random sample of all military recruits in their cohort.
A Thompson sampling agent first samples a random belief and then chooses the best prediction with respect to this belief.
Households were selected by systematic random sampling: a random 'start point' was chosen between 1 and 4, with every fourth household sampled thereafter.
Of 107 RV-positive samples, a random subset of 17 were typed.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com