Questions from Statistics Principles


Q: A study was designed “to determine if application of duct tape

A study was designed “to determine if application of duct tape is as effective as cryotherapy (liquid nitrogen applied to the wart for 10 seconds every 2 to 3 weeks) in the treatment of common warts.”...

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Q: Are any of the measures of dispersion mentioned in this section resistant

Are any of the measures of dispersion mentioned in this section resistant? Explain.

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Q: What does it mean when a statistic is biased?

What does it mean when a statistic is biased?

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Q: What makes the range less desirable than the standard deviation as a

What makes the range less desirable than the standard deviation as a measure of dispersion?

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Q: In one of Sullivan’s statistics sections, the standard deviation of the

In one of Sullivan’s statistics sections, the standard deviation of the heights of all students was 3.9 inches. The standard deviation of the heights of males was 3.4 inches and the standard deviation...

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Q: Explain how standard deviation measures spread. In your explanation include the

Explain how standard deviation measures spread. In your explanation include the computation of the same standard deviation for two data sets: Data set I: 3, 4, 5; Data set II: 0, 4, 8.

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Q: Which of the following would have a higher standard deviation? (

Which of the following would have a higher standard deviation? (a) IQ of students on your campus or (b) IQ of residents in your home town? Why?

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Q: Develop a sample of size n = 8 such that /and

Develop a sample of size n = 8 such that /and s = 0.

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Q: Draw two histograms with different standard deviations and label them I and

Draw two histograms with different standard deviations and label them I and II. Which histogram has the larger standard deviation?

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Q: In 2000, the Walt Disney Company created the “fast pass

In 2000, the Walt Disney Company created the “fast pass” —a ticket issued to a rider for a popular ride and the rider is told to return at a specific time during the day. At that time, the rider is al...

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