correlation matrices

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correlation matrices

John F Hall
Bruce
 
That's what happens when you let the computer scientists, statitsticians and  beancounters take over something originally produced by social researchers (in SPSS's case, graduate political science students).  The rot started after the final design conference I organised at LSE in 1974 for the new SPSS: the disastrous demo at the later Novotel launch by Major Lester (which Jim Ring and I had to rescue) confirmed our worst fears.  SPSS had been well and truly kidnapped by aliens!
 
corr ..../pri nos.
 
...used to produce a matrix with asterisks, but no sig or n.  Useful check for deriving attitude scales and the like.  Elementary linkage analysis (McQuitty, manually on the matrix) saved a lot of paper and time and the rough-and-ready approach was just as good as factor analysis, cluster analysis and and all that.
 
As Tukey once said, "All the statistics in the world won't save you if you asked the wrong question in the first place."  Think I'll stick to social science.
 
John
 
PS  I hope SPSS let me keep my academic author status!  I can't afford to pay for my licence.