Now showing items 1-20 of 21

    • 9 - Breakfast Cereal 

      Lillestøl, Jostein (Working paper, 2007-10-10)
      Topic: Cluster analysis and alternatives Context: The following data (units omitted) on the content of 23 different brands of breakfast cereal were read from the packages found in two food stores in Bergen in the ...
    • 6 - Fish Farming 

      Lillestøl, Jostein (Others, 2007-10-07)
      Topic: Distribution, mean and variation over time Context: The business of fish farming offers many challenging problems where you have to combine economics and bioscience. This also offers lots of opportunities for ...
    • 13 - Response Times 

      Lillestøl, Jostein (Others, 2007-10-14)
      Topics: One-sample and two-sample estimation and testing, analysis of variance and regression Context: The users of a data base system, e.g. in a bank, will emphasize short response times when searching the data ...
    • 18 - Union Card 

      Lillestøl, Jostein (Others, 2007-10-19)
      Topic: T-tests, analysis of variance, regression Context: The labour union UNI has doubled its membership during the last year, due to desertion from another union. Some new offers to the membership are under ...
    • 7 - Car Insurance 

      Lillestøl, Jostein (Others, 2007-10-08)
      Topic: Categorical variables, covariation and explanation Context: The insurance company CI specializes in car insurance, and wants to get some preliminary views from the market about added features to the comprehensive ...
    • 10 - Hotel Tourism 

      Lillestøl, Jostein (Working paper, 2007-10-11)
      Topic: Factor analysis and Discriminant analysis Context: This case is based on answers of questionnaires given to tourists at hotels in three different regions of Norway, here named Valleyland, Fjordland and ...
    • 11 - Takeover 

      Lillestøl, Jostein (Others, 2007-10-12)
      Topic: Estimation with error limits Context: An industry group has for some years owned a company in the building trade with branches in several cities. Now they have decided to sell the company to a foreign company. ...
    • 17 - Tax Audit 

      Lillestøl, Jostein (Others, 2007-10-18)
      Topic: Comparisons, regression and outliers Context: The establishment ”Nels” has live music every Friday and Saturday. The guests have to pay a cover charge of 50 NOK kr, and if the cloakroom is used, a wardrobe fee ...
    • 3 - Sold Out 

      Lillestøl, Jostein (Others, 2007-10-04)
      Topic: Binomial counts in a time context Context: The food chain SO has four stores in the same region getting supplies from the same inventory. They consider introducing a new data based ordering system in all four ...
    • 16 - Lost Sales 

      Lillestøl, Jostein (Others, 2007-10-17)
      Topic: Two-sample comparisons Context: Our firm started a certain business service in the early 1990’s. The concept was a success, and several other firms were established in the mid 1990’s offering similar services. ...
    • Preface 

      Lillestøl, Jostein (Others, 2007-10-01)
      This is a case collection in data analysis containing cases mostly relevant for business studies. The first part of ten cases are mini-cases, that is, with a limited issue and a small dataset. The second part contains wider ...
    • 8 - Vodka Sales 

      Lillestøl, Jostein (Others, 2007-10-09)
      Topic: Time series analysis and prediction Context: A wholesale dealer of liquor has on record the sales each month of a certain brand of vodka for the period of July 2001 - June 2004. The data is available in the ...
    • 12 - Cashier Fraud 

      Lillestøl, Jostein (Working paper, 2007-10-13)
      Topic: Variation and extremes Context : This case deals with cashier fraud at a supermarket, involv¬ing so-called “return money” when the cashiers have to correct errors. The supermarket in question has 16 cashiers, ...
    • 5 - Minced Meat 

      Lillestøl, Jostein (Others, 2007-10-06)
      Topic: Statistical Process Control Context: A slaughterhouse has initiated a program to implement quality management ideas at their production facility. Among others, this means an effort to keep all their processes ...
    • 14 - Operating Expenses 

      Lillestøl, Jostein (Others, 2007-10-15)
      Topic: Multidimensional categorical and numerical variables - association and explanation A civil service operates throughout the state and has a number of cars. Purchasing and maintenance are decentralized to 6 ...
    • 19 - Hospital Expenses 

      Lillestøl, Jostein (Others, 2007-10-20)
      Topic: Analysis of variance (ANOVA) Context: A county wants to look into a specific type of costs at three of its regional hospitals. The last three years the average cost per patient day of stay, adjusted for ...
    • 2 - Coding Errors 

      Lillestøl, Jostein (Others, 2007-10-03)
      Topic: Two-sample binomial counts Context: Many jobs involve entering codes into an information system. In order to avoid rework, confusion and trouble, the codes have to be memorized and remembered correctly. This ...
    • 15 - City Parking 

      Lillestøl, Jostein (Others, 2007-10-16)
      Topic: Estimation with confidence, t-tests Context: The city parking company of Bergen, Norway had in the period 1983-1988 two shifts for emptying the parking meters and ticket machines. The two shifts were alternating ...
    • 20 - Customer Satisfaction 

      Lillestøl, Jostein (Working paper, 2007-10-21)
      Topics: Possible methods of analysis are: Cross tabulation - chisquare tests Analysis of variance Regression analysis Factor analysis Discriminant analysis Cluster analysis Context: For producers of ...
    • 4 - Accident Risks 

      Lillestøl, Jostein (Others, 2007-10-05)
      Topic: Frequency counts, risk analysis Context: Many companies and organizations observe and keep records of work accidents or some other unwanted event over time, and report the numbers monthly, quarterly or yearly. ...