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  • Editorial preface 

    Boyle, Gerry; Geary, R. C. (Economic & Social Studies, Dublin, 1996)
    This special issue of the Review marks the centenary of the birth of Roy Geary ? Ireland's greatest statistician ? who was born in Drumcondra, Dublin on 11 April, 1896 and died on 8 February, 1983. It is the third occasion ...
  • 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 ...
  • Theoretical foundations of the "Geary Method" for international comparisons of purchasing power and real incomes 

    Neary, J. Peter (Economic & Social Studies, Dublin, 1996)
    This paper provides a centenary review of the method of calculating real incomes and purchasing power parities proposed by Roy Geary. This method is the most widely used in major international comparisons, but it is often ...
  • More about Geary and the "Taxi" problem 

    Conniffe, Denis; Geary, R. C. (Economic & Social Studies, Dublin, 1996)
    Geary's treatment of the "taxi" problem was recently re-examined by Spencer and Largey (1993). This paper investigates the topic further, partly to place Geary's estimator in the context of more general methods and also ...
  • Estimation of the parameter in the discrete "Taxi" problem, with and without replacement 

    Largey, Ann; Spencer, John E. (Economic & Social Studies, Dublin, 1996)
    In the continuous uniform distribution [0,N], the Maximum Likelihood estimator of N is known to possess high mean square error for large samples. This paper examines this issue in the discrete case, without replacement ...
  • 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 ...
  • Determination of linear relations between systematic parts of variables with errors of observation the variances of which are unknown 

    Geary, R. C. (Economic & Social Studies, Dublin, 1996)
    Given a sufficient number of instrumental variables significantly correlated with the investigational variables, consistent estimates of the coefficients of the linear relations can be determined (if they exist), without ...