Questions from Applied Statistics

Q: (a) Plot the data on airplane shipments. (b

(a) Plot the data on airplane shipments. (b) Can you see seasonal patterns? Explain. (c) Use MegaStat or MINITAB to calculate estimated seasonal indexes and trend. Is there a trend in the deseasonaliz...

Q: (a) Plot the data on revolving credit (credit cards

(a) Plot the data on revolving credit (credit cards and home equity lines of credit are the two major types of revolving credit). (b) Use MegaStat or MINITAB to calculate seasonal indexes and trend. I...

Q: (a) Use MegaStat or MINITAB to deseasonalize the quarterly data

(a) Use MegaStat or MINITAB to deseasonalize the quarterly data on Coca-Cola’s revenues and fit a trend. Interpret the results. (b) Use MegaStat or MINITAB to perform a regression us...

Q: (a) Use MegaStat or MINITAB to perform a regression using

(a) Use MegaStat or MINITAB to perform a regression using seasonal binaries. Interpret the results. (b) Make monthly forecasts for 2010. If you can find data on the web, check your forecasts.

Q: A newspaper article listed nutritional facts for 56 frozen dinners. From

A newspaper article listed nutritional facts for 56 frozen dinners. From that list, 16 frozen dinners were randomly selected by using the random number method. Research question: Choose any two variab...

Q: The table below shows ratings of 18 movies by two reviewers (

The table below shows ratings of 18 movies by two reviewers (on a 0 to 5 ✰ scale using half ✰ increments). Research question: At α = .05, based on these...

Q: The management of a theme park obtained a random sample of the

The management of a theme park obtained a random sample of the ages of 36 riders of its Space Adventure Simulator. (a). Make a nice histogram. (b). Did your histogram follow Sturgesâ€&#...

Q: Are gasoline prices a potential policy tool in controlling carbon emissions?

Are gasoline prices a potential policy tool in controlling carbon emissions? The table below shows 2001 gasoline prices (dollars per liter) and carbon dioxide emissions per dollar of GDP. Research que...

Q: Below are the top 20 U.S. football teams in

Below are the top 20 U.S. football teams in the seventh and eighth weeks of a recent season, along with the points awarded to each team by a poll of coaches. Research question: At α = .0...

Q: A supplier of laptop PC power supplies uses a control chart to

A supplier of laptop PC power supplies uses a control chart to track the output (in watts) of each unit produced. The pattern below shows whether each unit’s output was above (A) or below (B) the desi...