Reference:

A.C. Rosander, Applications of Quality Control to the Service
Industries, ASQC Quality Press, 1985, p. 114. 

Variable Names: 

    1. NBR: Order number of Liberty Ships built in Yard A in World War II 
    2. HRS: Thousands of man-hours per ship 

   NBR    HRS   

    5    1094    
   10     894     
   25     647     
   30     659     
   75     529    
  100     424    
  125     376    
  150     395   
  175     395   
  200     388   
  225     376    
  250     353    
  285     280    

Reference:

A.C. Rosander, Applications of Quality Control to the Service
Industries, ASQC Quality Press, 1985, p. 114. 

Variable Names: 

    1.DAY: Days 1 to 45 
    2.COST: Cost per record transcribed 


   DAY      COST   

    1       26.3   
    2       21.8   
    3       19.5  
    4       17.9  
    5       15.4  
    6       13.9   
    7       14.5  
    8       17.1  
    9       16.8  
    10      14.5   
    11      14.5   
    12      13.5   
    13      14.2  
    14      15.1 
    15      13.9  
    16      13.8  
    17      11.7  
    18      10.6   
    19      13.5  
    20      9.7   
    21      11.0   
    22      10.8   
    23      11.3   
    24      9.8    
    25      13.3  
    26      12.2   
    27      10.8   
    28      12.1   
    29      11.6   
    30      9.7    
    31      11.7    
    32      10.4 
    33      10.6 
    34      11.0  
    35      9.9   
    36      9.4   
    37      7.9   
    38      8.2   
    39      8.5   
    40      7.4   
    41      8.2   
    42      8.6   
    43      8.1   
    44      9.7   
    45      7.9    

Reference:

B.D. Greenshields and F.M. Weida, 
Statistics with Applications to Highway Traffic
Analysis, Eno Foundation, 1978, 129-131. 

Variable Names: 

   1. DENS: Density (vehicles per mile) of traffic on a Connecticut freeway 
   2. MPH: Average speed of vehicles on a Connecticut freeway 

   DENS     MPH   

   20.4    38.8   
  106.2    10.6   
  141.3     7.7   
  121.7     8.5   
  130.5     8.6     
  123.9     9.8     
   29.5    31.8   
   26.5    34.0  
   30.0    28.8   
   97.0    12.3   
  106.7    11.4   
  107.2    10.3  

Reference: Moore, David S., and George P. McCabe (1989). Introduction
to the Practice of Statistics, p. 118.  

Description: Mean heights of a group of children in Kalama, 
an Egyptian village that is the site of a study of nutrition 
in developing countries. The data were obtained by measuring 
the heights of all 161 children in the village each month 
over several years. 

Number of cases: 12 

Variable Names: 

    1. Age:    Age in months 
    2. Height: Mean height in centimeters for children at this age 

age     height
18      76.1
19      77
20      78.1
21      78.2
22      78.8
23      79.7
24      79.9
25      81.1
26      81.2
27      81.8
28      82.8
29      83.5