Sampling Methods a

Flashcard
•
Mathematics
•
11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a controlled experiment?
Back
A controlled experiment is a scientific test where the observational units are assigned randomly to different treatments, allowing for the determination of cause and effect relationships between variables.
2.
FLASHCARD QUESTION
Front
What is a cluster sample?
Back
A cluster sample is a sampling method where the population is divided into groups (clusters), and entire clusters are randomly selected to be included in the sample.
3.
FLASHCARD QUESTION
Front
What is a simple random sample?
Back
A simple random sample is a sampling method where every individual in the population has an equal chance of being selected, and every group of individuals of size n is equally likely to be chosen.
4.
FLASHCARD QUESTION
Front
What is the advantage of using a stratified random sample?
Back
A stratified random sample ensures that specific subgroups (strata) within a population are represented in the sample, leading to more accurate and reliable results.
5.
FLASHCARD QUESTION
Front
What is sampling bias?
Back
Sampling bias is any difference between the sample result and the truth about the population that tends to occur in the same direction whenever a specific sampling method is used.
6.
FLASHCARD QUESTION
Front
What is the purpose of stratification in sampling?
Back
Stratification in sampling is used to ensure that different segments of a population are adequately represented, which can improve the accuracy of the results.
7.
FLASHCARD QUESTION
Front
What is the difference between a sample and a population?
Back
A population is the entire group of individuals or instances that you want to draw conclusions about, while a sample is a subset of that population used to gather data.
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