Questions from Business Statistics

Q: For the 190 life expectancies in Exercise 15, 1.

For the 190 life expectancies in Exercise 15, 1. Would you report the standard deviation or the IQR? 2. Justify your answer briefly.

Q: For the number of adoptions in Exercise 12, 1.

For the number of adoptions in Exercise 12, 1. Would you report the standard deviation or the IQR? 2. Justify your answer briefly.

Q: For the bicep measurements in Exercise 10, would you report the

For the bicep measurements in Exercise 10, would you report the standard deviation or the IQR? Explain briefly.

Q: For the shoe sizes in Exercise 16, what might be the

For the shoe sizes in Exercise 16, what might be the problem with either the standard deviation or the IQR as a measure of spread?

Q: The pie chart summarizes the genres of the 891 MPAA rated movies

The pie chart summarizes the genres of the 891 MPAA rated movies released in 2014 and 2015. (Data extracted from Movies 06-15) 1. Is this an appropriate display for the genres? Why or why not? 2. Whic...

Q: The Motion Picture Association of America (MPAA) rates each film

The Motion Picture Association of America (MPAA) rates each film to designate the appropriate audience. The ratings are G, PG, PG-13, and R. The pie chart shows the MPAA ratings of the same 891 movies...

Q: The ratings of the 20 top-grossing movies in the years

The ratings of the 20 top-grossing movies in the years 2006, 2008, 2012, and 2014 are shown in the following bar charts. The pie charts show the same data but are unlabeled. Match each pie chart with...

Q: Changing attitudes about marriage and families prompted Pew Research to ask how

Changing attitudes about marriage and families prompted Pew Research to ask how people felt about particular recent trends. (pewresearch.org/pubs/1802/decline-marriage-rise-new-families) For each tren...

Q: For a period of five years, physicians at McGill University Health

For a period of five years, physicians at McGill University Health Center followed more than 5000 adults over the age of 50. The researchers were investigating whether people taking a certain class of...

Q: Here are two histograms showing the annual number of traffic fatalities in

Here are two histograms showing the annual number of traffic fatalities in passenger cars. (NHTSA) One plots the years, and the other plots the fatalities. 1. There are gaps in the histogram for Year....