This is a scatter diagram, showing average VCF by long and short axes on the horizontal axis and the difference in VCF, long minus short, on the vertical axis. The horizontal scale is labeled 0, 0.5, 1, 1.5, 2.0. The vertical scale is labeled minus 0.8, minus 0.6, minus 0.4, minus 0.2, 0, 0.2, 0.4, 0.6, and 0.8. The two scales are not equal.
There are three horizontal lines on the graph, approximately through minus 0.3, 0, and plus 0.3. The lowest line is labeled mean minus 2 S D, the middle line is labeled mean, the highest line is labeled mean plus 2 S D.
The points form a triangular cloud with an apex at about 0.5 horizontally and 0 vertically. The triangle then gets wider to a vertical side at about 1.8 horizontally, from about minus 0.6 to plus 0.6 vertically.
There are five points outside the top and bottom lines, at about average = 1.2, difference = minus 0.42, at about average = 1.3, difference = plus 0.38, at about average = 1.4, difference = minus 0.4, at about average = 1.7, difference = minus 0.44, and at about average = 1.8, difference = plus 0.6.
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This page maintained by Martin Bland.
Last updated: 29 April, 2008.