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Quantitative Research Techniques + Statistics - Peregrine Questions and Correct Verified Answers Highly Recommended Version For Already A Graded|New and Revised!!!$11.49
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Quantitative Research Techniques + Statistics - Peregrine Questions and Correct Verified Answers Highly Recommended Version For Already A Graded|New and Revised!!!
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Course
Quantitative Research Techniques + Statistics
Institution
Quantitative Research Techniques + Statistics
A company developed a smartphone whose average lifetime is unknown. In order to
estimate the average, 200 smartphones are randomly selected from a large production line
and tested; their average is found to be 5 years. The 200 smartphones represent:
a sample
Significance level
Measures the...
Quantitative Research Techniques +
Statistics - Peregrine Questions and
Correct Verified Answers Highly
Recommended Version For 2024-2025
Already A Graded|New and Revised!!!
A company developed a smartphone whose average lifetime is unknown. In order to
estimate the average, 200 smartphones are randomly selected from a large production line
and tested; their average is found to be 5 years. The 200 smartphones represent:
✓ a sample
Significance level
✓ Measures the reliability of a statistical inference
inferential statistics
✓ Process of using sample statistics (mathematics) to draw conclusions about
population parameters
mutually exclusive
✓ Events that cannot occur at the same time.
sampling error
Top Mark !!!
11
, Top Mark Questions and Correct Verified Answers
✓ the difference between the results of random samples taken at the same time
non-sampling error
✓ occurs when the sample data are incorrectly collected, recorded, or analyzed. Three
types of errors: data acquisition errors, non-response errors (or bias), selection bias
Design of a good survey components
✓ short survey, short/simple questions, start with demographic questions, ues
dichtomous (yes-no) and multiple choice
Direct observation
✓ example: counts backpacks on campus for a day
stratified random sample
✓ a sample from selected subgroups of the target population in which everyone in
those subgroups has an equal chance of being included in the research
✓
✓ example: The manager of a customer service division wants to know if the
customers in the past 12 months are satisfied with their purchase of CD's. There are
four types of CD's.
Top Mark !!!
22
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