Questions from Business Statistics

Q: High salaries for presidents and high executives of charitable organizations have been

High salaries for presidents and high executives of charitable organizations have been in the news from time to time. Consider the information in Table 11.3.13 for the United Way in 10 major cities. a...

Q: Table 11.3.14 gives mailing-list size (

Table 11.3.14 gives mailing-list size (thousands of names) and sales (thousands of dollars) for a group of catalogs. a. How strong is the association between these two variables? Find the appropriate...

Q: Table11.3.15 compares short-term bond funds,

Table11.3.15 compares short-term bond funds, showing the average maturity (in years until the fund’s bonds mature) and the rate of return as a percentage. a. Find the correlation bet...

Q: Should anything else trouble you about this situation?

Should anything else trouble you about this situation?

Q: From Table 11.3.16, consider the daily production

From Table 11.3.16, consider the daily production and the number of workers assigned for each of a series of days. a. Find the regression equation for predicting production from the number of workers....

Q: Table 11.3.2 shows the on-time performance

Table 11.3.2 shows the on-time performance of nine airlines, both for 1 month (May 2010) and for the preceding 4 months (Jan. to Apr. 2010). These numbers represent percentages off lights that arrived...

Q: Consider the international currency markets and, in particular, whether geographical

Consider the international currency markets and, in particular, whether geographical proximity implies association with respect to market movements. Because the United Kingdom kept the pound and did n...

Q: Now consider also the daily percentage changes in the price of a

Now consider also the daily percentage changes in the price of a dollar in Japanese yen from Table 11.3.17, along with the euro. a. Create a scatterplot of the euro’s against the yen...

Q: Many companies do not restrict themselves to operating inside any particular country

Many companies do not restrict themselves to operating inside any particular country, instead choosing to participate in the global economy, and stock market movements should reflect this reality. Con...

Q: Microsoft is a company that sells its products in many countries all

Microsoft is a company that sells its products in many countries all over the world. Use the data from Table 11.3.18 to explore how its market price movements relate to more general movements in the g...