Questions from Statistics

Q: The Michelin tire company also rates restaurants, using 1 star,

The Michelin tire company also rates restaurants, using 1 star, 2 stars, or 3 stars. Many other restaurants are deemed to have quality not good enough to earn any stars, and many others are not judged...

Q: Consumer Reports magazine lists a rating of “best buy,” “

Consumer Reports magazine lists a rating of “best buy,” “recommended,” or “not recommended” for each of several different computers.

Q: In a clinical trial of a new drug, subjects are placed

In a clinical trial of a new drug, subjects are placed in groups as follows: Subjects in Group 1 are each given a placebo containing none of the drug; subjects in Group 2 are each given 10-mg doses of...

Q: What is the difference between qualitative data and quantitative data?

What is the difference between qualitative data and quantitative data?

Q: Distinguish between discrete and continuous data, and give an example of

Distinguish between discrete and continuous data, and give an example of each.

Q: What do we mean by data at the nominal, ordinal,

What do we mean by data at the nominal, ordinal, interval, and ratio levels of measurement?

Q: Explain why temperatures on the Fahrenheit or Celsius scales are at the

Explain why temperatures on the Fahrenheit or Celsius scales are at the interval level of measurement while distances are at the ratio level.

Q: A survey asked people about their party affiliation and recorded the responses

A survey asked people about their party affiliation and recorded the responses as 1 for Democrat, 2 for Republican, 3 for Independent, and 4 for anything else. The survey found that the average (mean)...

Q: A microbiologist measures the distance across a red blood cell and an

A microbiologist measures the distance across a red blood cell and an astronomer measures the distance across the Milky Way galaxy. The absolute error that the microbiologist makes in measuring the ce...

Q: Consider the measurements described in Exercise 5. The relative error that

Consider the measurements described in Exercise 5. The relative error that the microbiologist makes in measuring a cell must be less than the relative error that the astronomer makes in measuring a ga...