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SAMPLING Flashcards | StudBud
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SAMPLING
SAMPLING
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1
What is an "element" in a population?
A individual unit in the population
A representative sample of individuals
A group of sampling units
A hypothesis about the population
2
What is a key difference between probability and nonprobability sampling?
Probability sampling is more time-efficient.
Probability sampling provides a known chance of selection for each element.
Nonprobability sampling eliminates sampling error.
Nonprobability sampling allows generalization to the population.
3
Which of the following best describes a parameter in research?
A characteristic calculated from a sample
A design step in determining the sample frame
A value that defines a specific subject
A measure like population mean or standard deviation
4
What does the term "sampling frame" refer to?
A specific sampling design
The sample size required for accuracy
A list of all elements in the population
The process of defining a population
5
Why is destructive sampling used in research?
To test items without damaging them
To save time and resources
To measure the lifespan of an item
To study the entire population
6
Why is hypothesis testing important in research?
It allows comparison of null and alternative hypotheses.
It proves the null hypothesis correct.
It helps include every element of the population
It eliminates the need for sample data.
7
What is the primary purpose of sampling in research?
To include every individual in a population
To eliminate errors entirely
To collect data from destroyed samples
To save time, cost, and resources
8
What does the central limit theorem assure in sampling?
Population parameters are exactly equal to sample statistics
Sampling always eliminates errors
All samples will perfectly represent the population
Large sample sizes lead to normal distribution of sample means
9
What happens when there is a discrepancy between the sampling frame and the population?
The sample becomes more representative.
The sampling process is abandoned.
Coverage error occurs.
The sample size is automatically adjusted.
10
What does the term "population" refer to in research?
A single individual in a study
The sampling units in a design
A subset of a larger group
The entire group being studied
