Now showing items 6-7 of 7

  • A visual test for a unit root: Geary's count of sign changes revisited 

    Honohan, Patrick; Geary, R. C. (Economic & Social Studies, Dublin, 1996)
    Prompted by Geary's (1970) suggestion in a different context, the stationarity of a plotted time series can be assessed by simply counting the number of times the plot crosses the trend line linking the first and last ...
  • Geary's contiguity ratio 

    Unwin, Antony (Economic & Social Studies, Dublin, 1996)
    Forty years ago Geary published a paper oil spatial statistics introducing the contiguity ratio, c, to measure spatial pattern. He discussed c not only as a direct measure but as a regression diagnostic for assessing ...