The phrase "attain the sample" is correct and usable in written English.
It can be used when referring to the act of obtaining or achieving a specific sample, often in a scientific or research context.
Example: "In order to conduct the experiment, we need to attain the sample from the designated location."
Alternatives: "obtain the sample" or "acquire the sample."
When equilibrium was attained, the sample was filtered using the standard Whatman filter paper (Cat No. 1001 125).
Based on the number of customers who visited each health institution during the previous ten months (monthly report of each health institution), proportional allocation of the total sample size was carried out to attain the required sample size in each health institution.
Based on the number of customers who visited each health institution during the previous one year (annual report of each health institution), proportional allocation of the total sample size was carried out to attain the required sample size in each health institution.
Even this strategy was not sufficient to attain the targeted sample size within the expected calendar, so eventually spatial sampling and random routes were also used to complete the sample (see Alternative sampling methods for immigrants in Spain and Italy ).
The robustness of the estimated cutoff values was examined using the nonparametric bootstrap method (Efron, 1979) with generation of 10 000 bootstrap samples to attain the empirical sampling distributions of the estimated cutoff values.
CONCLUSIONS: Pooling of data from multiple institutions is needed to attain the large sample sizes needed for multivariate analysis with validation.
At 3 sites, the number of children selected per institution was increased to attain the target sample of 250 per site.
Another measure to attain the low SES sample we are aiming at is to limit the percentage of children who attend secondary school to 30%.
Moreover, it takes some time for the sample to attain the selected temperature, and for a high temperature of the dies, the reaction takes place before thermal equilibrium has reached.
