Questions from Statistics

Q: The graph shows shoe sizes for men and women. Compare shapes

The graph shows shoe sizes for men and women. Compare shapes, centers, and spreads, and mention if there are outliers.

Q: Predict the shape of the distribution of the salaries of 25 chief

Predict the shape of the distribution of the salaries of 25 chief executive officers (CEOs). A typical value is about 50 million per year, but there is an outlier at about 200 million.

Q: A study was conducted to assess whether 5 weeks of training with

A study was conducted to assess whether 5 weeks of training with virtual reality (VR) can reduce the risk of falls in adults. Thirty-four older adults underwent 15 VR training sessions consisting of w...

Q: A physician asks all of his patients to report the approximate number

A physician asks all of his patients to report the approximate number of cigarettes they smoke in a day. Predict the shape of the distribution of number of cigarettes smoked per day.

Q: The following table shows the first few entries for the number of

The following table shows the first few entries for the number of hours of sleep in one night for a sample of college students. The data are stacked and coded, where 0 represents a male student and 1...

Q: The following table shows the first few entries for the majors of

The following table shows the first few entries for the majors of a sample of college students. The data are stacked and coded, where 0 represents a female student and 1 represents a male student. Wha...

Q: The use of the drug Prempro, a combination of two female

The use of the drug Prempro, a combination of two female hormones that many women take after menopause, is called hormone replacement therapy (HRT). In July 2002, a medical article reported the result...

Q: The bar graph shows information reported in Time magazine (May 28

The bar graph shows information reported in Time magazine (May 28, 2012). For each country, the percentage of music sold over the Internet and the percentage of people with access to the Internet are...

Q: The following dotplots show the number of calories in a sample of

The following dotplots show the number of calories in a sample of cereals from two manufacturers: “G” = General Mills and “K” =...

Q: The weights of coins (in grams) were obtained for coins

The weights of coins (in grams) were obtained for coins in the United States and coins for other countries (including Mexico, Brazil, Canada, and several in Europe). a. Write a few sentences to compar...