Graph description: Figure 8. Effect on the correlation coefficient of systematic bias

This graph has two panels. Each panel shows a scatter diagram with the rising diagonal line of equality on it.

The first scatter diagram shows P E F R by the Wright meter on the horizontal axis and P E F R by the mini meter on the vertical axis. The horizontal scale is labeled 200, 300, 400, 500, 600, 700 litres per minute. The vertical scale is labeled 200, 300, 400, 500, 600, 700, 800 litres per minute. The points form a cloud along the line of equality, on either of it. The graph includes the legend r equals 0.94.

The second scatter diagram shows P E F R by the Wright meter on the horizontal axis and P E F R by the mini meter plus 100 on the vertical axis. The horizontal scale is labeled 200, 300, 400, 500, 600, 700 litres per minute. The vertical scale is labeled 200, 300, 400, 500, 600, 700, 800 litres per minute. The points form a cloud above and parallel to the line of equality, all points being above it. Apart from being raised vertically by 100, the points are identical to the points in the first panel. The graph includes the legend r equals 0.94.


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Last updated: 29 April, 2008.