Start Geo Dictionary | Overview | Topics | Groups | Categories | Bookmark this page.
 
geology dictionary - geography encyclopedia  
Full text search :        
   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   #   

 

 

measurement

 
     
  A classification of data types for statistical analysis in which four levels are generally recognized:

{img src=show_image.php?name=2022.gif } nominal, in which each individual (member of a population or sample) is allocated to one out of two or more exclusive categories; {img src=show_image.php?name=2022.gif } ordinal, in which either the individuals or the categories to which they are allocated are rank-ordered on some criterion; {img src=show_image.php?name=2022.gif } interval, which involves a quantitative assessment of the distance between two observations along a predetermined scale (such as °C); and {img src=show_image.php?name=2022.gif } ratio, which allows relative quantitative assessment of differences along a scale.Thus nominal measurement would allocate three million people to Birmingham and nine million to London; ordinal measurement of the same data would say that London is bigger than Birmingham; interval measurement provides the information that London has six million more people than Birmingham; and ratio measurement indicates that London is three times the size of Birmingham. (RJJ)
 
 

 

 

 
 
Bookmark this page:
 
 

 

 

 
 
<< former term
 
next term >>
mean information field (m.i.f)
 
media, geography of
 
     

 

Other Terms : spatial decision support systems | Landschaft | stages of growth
Home |  Add new article  |  Your List |  Tools |  Become an Editor |  Tell a Friend |  Links |  Awards |  Testimonials |  Press |  News |  About
Copyright ©2009 GeoDZ. All rights reserved.  Terms of Use  |  Privacy Policy  |  Contact Us