Graph alt text 4

Dot plot entitled ‘Differences in sample means’ with a horizontal scale showing the difference between males and females from -20 to +20. Dots, representing the difference between sampled male and female points, are spread almost uniformly across the range of -18 to +19, with a concentration of data points between -10 and +10. Vertical lines at -6.80 (observed difference) and +6.80 bound slightly more than half the points in the set.

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Last updated September 9, 2010

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