Questions from Applied Statistics

Q: (a) Plot the total minutes of TV viewing time per

(a) Plot the total minutes of TV viewing time per household. (b) Describe the trend (if any) and discuss possible causes. (c) Fit a linear trend to the data. (d) Would this model give reasonable forec...

Q: (a) Plot the voter participation rate. (b)

(a) Plot the voter participation rate. (b) Describe the trend (if any) and discuss possible causes. (c) Fit both a linear and a quadratic trend to the data. (d) Which model is preferred? Why? (e) Make...

Q: If freeway speeds are normally distributed with a mean of μ =

If freeway speeds are normally distributed with a mean of μ = 70 mph and σ = 7 mph, find the probability that the speed of a randomly chosen vehicle (a) exceeds 78 mph; (b) is between 65 and 75 mph; (...

Q: (a) Choose one category of consumer credit and plot it

(a) Choose one category of consumer credit and plot it. (b) Describe the trend (if any) and discuss possible causes. (c) Fit a trend model of your choice. (d) Make forecasts for 3 years (2011â&#...

Q: Which statement is correct? Why not the others?

Which statement is correct? Why not the others? a. Likert scales are interval if scale distances are meaningful. b. Cross-sectional data are measured over time. c. A census is always preferable to a...

Q: (a) Plot the data on U.S. general

(a) Plot the data on U.S. general aviation shipments. (b) Describe the pattern and discuss possible causes. (c) Would a fitted trend be helpful? Explain. (d) Make a similar graph for 1993â€...

Q: (a) Choose one beverage category and plot the data.

(a) Choose one beverage category and plot the data. (b) Describe the trend (if any) and discuss possible causes. (c) Would a fitted trend be helpful? Explain. (d) Fit several trend models. Which is be...

Q: (a) Plot either receipts and outlays or federal debt and

(a) Plot either receipts and outlays or federal debt and GDP (plot both time series on the same graph). (b) Describe the trend (if any) and discuss possible causes. (c) Fit a trend of your choice to e...

Q: (a) Plot both men’s and women’s winning times on the

(a) Plot both men’s and women’s winning times on the same graph. (b) Fit a linear trend model to each series. From the fitted trends, will the times eventually conv...

Q: A cognitive retraining clinic assists outpatient victims of head injury, anoxia

A cognitive retraining clinic assists outpatient victims of head injury, anoxia, or other conditions that result in cognitive impairment. Each incoming patient is evaluated to establish an appropriate...