Graph alt text 9

An X–Y scatter plot entitled ‘Female ideal and actual weights’, with actual weight in kilogrammes (kg) along the horizontal (x) axis and ideal weight (kg) along the vertical (y) axis. Points, each representing a female student, are located at the intersection of measured actual weight and self-perceived ideal weight. An example point labelled (72, 70) represents a student weighing 72 kg who believes their ideal weight to be 70 kg. Points are clustered along a trend line with approximate slope of 0.6, starting from the point (0,18.661) on the y-axis, such that equal numbers of points are above and below this line. The trend line passes through the labelled point (72, 62.5), the predicted actual and ideal weight for the 72 kg student. A double headed arrow, labelled ‘residual’, shows the vertical difference between the observed point (72, 70) and the predicted point (72, 62.5).

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Last updated September 9, 2010

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