Questions from Business Statistics

Q: Shown here is a scatter plot of the NASDAQ 100 Index versus

Shown here is a scatter plot of the NASDAQ 100 Index versus the Dow Jones Industrial Average on Friday closings over a period of one year (January 12, 2018 to January 4, 2019). What does the graph tel...

Q: The human resources manager for a large company commissions a study in

The human resources manager for a large company commissions a study in which the employment records of 500 company employees are examined for absenteeism during the past year. The business analyst con...

Q: List three specific uses of cumulative frequencies in business?

List three specific uses of cumulative frequencies in business?

Q: Assembly times for components must be understood in order to “level

Assembly times for components must be understood in order to “level” the stages of a production process. Construct both a histogram and a frequency polygon for the following assembly time data and com...

Q: A call center is trying to better understand staffing requirements. It

A call center is trying to better understand staffing requirements. It records the number of calls received during the evening shift for 78 evenings and obtains the information given below. Construct...

Q: Suppose you are the owner of a medium-sized restaurant in

Suppose you are the owner of a medium-sized restaurant in a small city. What are some variables associated with different aspects of the business that might be helpful to you in making business decisi...

Q: Construct an ogive for the following data. Class Interval _______________

Construct an ogive for the following data. Class Interval _______________ Frequency 3–under 6 ………………….………….. 2 6–under 9 ………………….………….. 5 9–under 12 ………………………….. 10 12–under 15 ………………………….. 11 15–unde...

Q: A real estate group is investigating the price of condominiums of a

A real estate group is investigating the price of condominiums of a given size (sq ft). The following sales prices ($1,000) were obtained in one region of a city. Construct a stem-and-leaf plot for th...

Q: The following data represent the number of passengers per flight in a

The following data represent the number of passengers per flight in a sample of 50 flights from Wichita, Kansas, to Kansas City, Missouri. a) Construct a dot plot for these data. b) Construct a stem...

Q: The following data represent the afternoon high temperatures for 50 construction days

The following data represent the afternoon high temperatures for 50 construction days during a year in St. Louis. a) Construct a frequency distribution for the data using 5 class intervals. b) Constr...