Questions from Business Statistics

Q: Several exercises in Chapter 7 showed that attendance Attendance at American League

Several exercises in Chapter 7 showed that attendance Attendance at American League baseball games increased increases with the number of runs scored. But fans may respond more to winning teams than t...

Q: A student collected nutrition data about candy bars by reading the labels

A student collected nutrition data about candy bars by reading the labels in a supermarket. Because candy bars have different serving sizes, the data are given as values per serving. Here is a regress...

Q: Many variables have an impact on determining the price of a house

Many variables have an impact on determining the price of a house. Among these are Living Area of the house (square feet) and number of Bathrooms. Information for a random sample of homes for sale in...

Q: Here is the regression for the women records for the same Scottish

Here is the regression for the women records for the same Scottish hill races we considered in Exercise 14: Dependent variable is: Women Time (mins) R-squared = 96.7% s = 10.06 1. Compare the regressi...

Q: Here are some diagnostic plots for the final exam data from Exercise

Here are some diagnostic plots for the final exam data from Exercise 13. These were generated by a computer package and may look different from the plots generated by the packages you use. (In particu...

Q: A candy maker surveyed chocolate bars available in a local supermarket and

A candy maker surveyed chocolate bars available in a local supermarket and found the following least squares regression model: Calories=28.4+11.37 Fat(g)+2.91 Sugar(g). 1. The hand-crafted chocolate...

Q: Here are some diagnostic plots for the home prices data from Exercise

Here are some diagnostic plots for the home prices data from Exercise 17. These were generated by a computer package and may look different from the plots generated by the packages you use. (In partic...

Q: The AFL-CIO has undertaken a study of the yearly salaries

The AFL-CIO has undertaken a study of the yearly salaries (in thousands of dollars) of 30 administrative assistants. The organization wants to predict salaries from several other variables. The variab...

Q: A large section of Stat 101 was asked to fill out a

A large section of Stat 101 was asked to fill out a survey on grade point average and SAT scores. A regression was run to find out how well Math and Verbal SAT scores could predict academic performanc...

Q: Find data on the Internet (or elsewhere) for two or

Find data on the Internet (or elsewhere) for two or more groups. Make appropriate displays to compare the groups, and interpret what you find.