Wikipedia 10K Redux by Reagle from Starling archive. Bugs abound!!!
<-- Previous | Newer --> | Current: 983068068 Dick Beldin at Sun, 25 Feb 2001 02:27:48 +0000.
back to [[Summary Statistics]] -- [[Quantiles]] The '''quartiles''' are three values which divide the sorted data set into four (approximately) equal parts. We cannot divide a set of 17 (say) data values into four equal parts since that would require splitting a datum. What we can do is interpolate between data items which bracket the desired position.i x[i] 1 102 2 105 ----------- the first quartile, Q[1] 3 106 4 109 ------------ the second quartile or [[median]] or Q[2] 5 110 6 112 ------------ the third quartile, Q[3] 7 115 8 118---- [[Dick Beldin]]