Questions from Applied Statistics

Q: In 2009, US Airways Flight 1549 made a successful emergency landing

In 2009, US Airways Flight 1549 made a successful emergency landing in the Hudson River, after striking birds shortly after takeoff. Are bird strikes an increasing threat to planes? (a). Make an Ex...

Q: (a) Make an Excel graph of the data on the

(a) Make an Excel graph of the data on the number of certified organic farms in the United States. (b) Discuss the underlying causes that might explain the trend or pattern. (c) Use Excel, MegaStat, o...

Q: In the previous problem, find (a) the 95th percentile

In the previous problem, find (a) the 95th percentile of waiting times (i.e., 95 percent below); (b) the first quartile of waiting times; (c) the mean time between arrivals.

Q: (a) Make an Excel line graph of the data on

(a) Make an Excel line graph of the data on employee work stoppages. (b) Discuss the underlying causes that might explain the trend or pattern. (c) Fit three trends (linear, exponential, quadratic). (...

Q: (a) Make an Excel line graph of the car dealership

(a) Make an Excel line graph of the car dealership data. (b) Discuss the underlying causes that might explain the trend or pattern. (c) Fit three trends (linear, exponential, quadratic). (d) Would any...

Q: (a) Plot the data on fruit and vegetable consumption.

(a) Plot the data on fruit and vegetable consumption. (b) Discuss the underlying causes that might explain the trend or pattern. (c) Fit a linear trend to the data. (d) Interpret the trend equation. W...

Q: (a) Make an Excel line graph of the exchange rate

(a) Make an Excel line graph of the exchange rate data. Describe the pattern. (b) Click on the data and choose Add Trendline > Moving Average. Describe the effect of increasing m (e.g., m = 2, 4, 6...

Q: Is an autocorrelation test appropriate for your data? If so,

Is an autocorrelation test appropriate for your data? If so, perform an eyeball inspection of residual plot against observation order or a runs test. Midterm and Final Exam Scores for Business Stati...

Q: (a) Make an Excel line graph of the following bond

(a) Make an Excel line graph of the following bond yield data. Describe the pattern. Is there a consistent trend? (b) Use exponential smoothing (MegaStat, MINITAB, or Excel) with α = .20...

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

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