Quantitative Research Techniques + Statistics – Peregrine| 69 questions| with complete solutions
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: correct answer: a sample Significance level correct answer: Measures the reliability of a statistical inference inferential statistics correct answer: Process of using sample statistics (mathematics) to draw conclusions about population parameters mutually exclusive correct answer: Events that cannot occur at the same time. sampling error correct answer: the difference between the results of random samples taken at the same time non-sampling error correct answer: 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 correct answer: short survey, short/simple questions, start w
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quantitative research techniques statistics – peregrine| 69 questions| with complete solutions
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