The results of the review of sampled
records are then applied to the population from which the sample was selected to determine an adjustment amount.
The average cumulative trial for the sampled
items was +58% over 20 weeks.
Thus, cluster sampling is usually more efficient than simple random sampling when the population to be sampled
is scattered over a wide area and considerable travel costs would be involved in drawing the simple random sample.
Much depends on the nature of the water that is being sampled
. That is, whether it is subject to alteration with time or might react with a chemical method.
During the washing, the effluent from the ultrasonic drain tube is sampled
with the tall-form 1000 ml beaker and observed.
For instance, if five cavities are sampled
from a 32-cavity mold, there is an 83.3% probability that a cavity will not be included in the sample.
The basic premise of sampling theory states that when a signal f(t) of bandwidth [Beta] (Hz) is sampled
at a rate of [f.sub.C,] which is greater than or equal to twice the signal bandwidth or 2[Beta], no information contained in the original signal is lost.
For tree topology support, we performed 1,000 bootstrapped neighbor-joining replicate trees under the ML substitution model described above and also generated posterior probabilities for each node by using Bayesian MCMC (Metropolis-Hastings Markov chain Monte Carlo) tree sampling (variable substitution rate by codon position, 4 chains of 2 x [10.sup.6] generations sampled
every 100 generations, bum-in of 2,000, and convergence assessed at effective sample size [ESS] >400) implemented in MrBayes v.
It is difficult because the population tends to be highly variable, requiring a larger sample to drive the sampling variability to anywhere near 10 percent and it is expensive and intrusive to make a determination about the qualifying activity for each sampled
project or employee, making it costly to achieve large samples.
In this issue, Shannon Atkinson, now at the University of Alaska Fairbanks, and colleagues from the Hawaii Institute of Marine Biology report for the first time the distribution of sampled
steroidal (nonplant-derived) estrogens in coastal waters of tropical oceans [EHP 111:531-535].
Steps 2 and 3 are decision diamonds that ask you to determine if the sand can be sampled
while in free fall; or if the sand is bagged.
Bonilla and Milbrath sampled
the air within 2 to 6 in.