stratified sample in a sentence

Examples

1. They took a stratified sample of the feedback posted during a one month period, then re-sampled it, giving them 808 samples.
2. We'll be using WP : Labels to apply topic labels to 198 pages from a stratified sample based on page quality.
3. In stratified sampling, a random sample is drawn from each of the strata, whereas in cluster sampling only the selected clusters are studied.
4. To learn more about how contributor motivation affects role behaviour, a survey of a stratified sample of contributors was performed, with 175 valid responses.
5. In computational statistics, stratified sampling is a method of variance reduction when Monte Carlo methods are used to estimate population statistics from a known population.
6. Stratified sampling ensures that at least one observation is picked from each of the strata, even if probability of it being selected is close to 0.
7. A uni-stage stratified sample is designed for Egyptian households in different governorates after being divided into three areas : urban governorates, Upper Egypt and Lower Egypt.
8. In stratified sampling, a random sample is drawn from all the strata, where in cluster sampling only the selected clusters are studied, either in single-or multi-stage.
9. Mapping was carried out on the 1 : 10, 000 scale using a stratified sample of a thousand 1 km 2 squares, 500 urban and 500 rural.
10. SRS cannot accommodate the needs of researchers in this situation because it does not provide subsamples of the population . " Stratified sampling " addresses this weakness of SRS.