Questions from Business Statistics

Q: For the international goods and services tax data of Table 5.

For the international goods and services tax data of Table 5.5.10, which shows these taxes as a percentage of GDP (gross domestic product, a measure of total national economic activity) and as a perce...

Q: For the municipal bond yields of Table 3.8.1

For the municipal bond yields of Table 3.8.1 in Chapter 3: a. Find the standard deviation of the yield. b. Find the range. c. Find the coefficient of variation. d. Use these summaries to describe the...

Q: Using the data from Table 3.8.4 in Chapter

Using the data from Table 3.8.4 in Chapter 3 for the market values of the portfolio investments of College Retirement Equities Growth Fund (CREF) in the media sector: a. Find the standard deviation of...

Q: Use the data set from problem 21 of Chapter 3 on poor

Use the data set from problem 21 of Chapter 3 on poor quality in the production of electric motors. a. Find the standard deviation and range to summarize the typical batch-to-batch variability in qual...

Q: How much variability is the rein loan fees for home mortgages?

How much variability is the rein loan fees for home mortgages? Find and interpret the standard deviation, range, and coefficient of variation for the data in Table 4.3.8 of Chapter 4. Table 4.3.8:...

Q: Using the data from Table 2.6.7 of Chapter

Using the data from Table 2.6.7 of Chapter 2 for the 30 Dow Jones Industrial companies percent changes since January 2015: a. Find the standard deviation of the percent change. b. Find the range of th...

Q: Consider the assets of stock mutual funds, as shown in Table

Consider the assets of stock mutual funds, as shown in Table 5.5.3. Answer the parts of the previous problem using the column of assets instead of the rates of return. Table 5.5.3:

Q: Consider the number of executives for all Seattle corporations with 500 or

Consider the number of executives for all Seattle corporations with 500 or more employees 19: 12, 15, 5, 16, 7, 18, 15, 12, 4, 3, 22, 4, 12, 4, 6, 8, 4, 5, 6, 4, 22, 10, 11, 4, 7, 6, 10, 10, 7, 8, 26,...

Q: Repeat problem 6 with the extreme outlier omitted, and write a

Repeat problem 6 with the extreme outlier omitted, and write a paragraph comparing the results with and without the outlier. Data from problem 6: Consider the number of executives for all Seattle co...

Q: Break down the annual salaries into three groups according to training level

Break down the annual salaries into three groups according to training level (A, B, or C). a.* Draw box plots to compare these three groups. Comment on what you see. b.* Find the average for each trai...