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Sampling in Statistics

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Questions and Answers

What is the main purpose of Sampling?

To eliminate the need for further research

To survey the entire population

To select a few from a large group (correct)

To make predictions based on the entire population

How is the sample size determined?

By the accuracy of the findings

By the total population

By the size of the study population (correct)

By the variation in sample population characteristics

What is the main characteristic of Random/Probability Sampling?

Dependent on other samples for selection

Each sample has different probability of selection

Dependent probability of each sample being selected

Equal and independent chance of selection for each sample (correct)

In which situation would there be greater uncertainty in the findings?

Variations in sample population characteristics Signup and view all the answers

What is one example of a Sampling Consideration?

Variations in Sample population characteristics Signup and view all the answers

What is the main reason for Department 2 and Department 15 to require all 30 employees to be included?

To ensure a representative sample Signup and view all the answers

Which of the following is an example of non-random/non-probability sampling technique mentioned in the text?

Quota Sampling Signup and view all the answers

What does 'Snowball' sampling involve?

Identifying individuals who can provide unbiased information Signup and view all the answers

What is the purpose of calculating the sample size using the margin of error and confidence level?

To ensure the precision and reliability of the results Signup and view all the answers

What is the significance of determining the standard deviation in sample size calculation?

To measure the variability in the population Signup and view all the answers