normal distribution curve


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Fig. 231 Normal distribution curve .

normal distribution curve

or

Gaussian curve

the bell-like shape produced when a ‘normal’ population is sampled for a continuously varying character (e.g. height in humans) and the FREQUENCY DISTRIBUTION plotted on a graph. The curve is theoretically exactly symmetrical, so that the shape on each side of the mean is the mirror image of the other, with an equal area. See Fig. 231 . Thus the MODE, MEDIAN, and ARITHMETIC MEAN are all at the centre of the distribution. The curve shows the frequency of recorded height in a ‘normal’ population of humans.
References in periodicals archive ?
Consequently, an expected normal distribution curve, overlaid on histograms, can provide insight into the statistical distribution of the mapped data on a ratio/interval scale (Slocum 1999).
c) Unlike the size distribution of columns with two plates at their bases (CP1a), which is well described by two normal distribution curves in Table 3, the size distribution of columns or bullets with one plate was characterized with one simple normal distribution curve.
The DILO CV1-system reduces this variation considerably and the normal distribution curve narrows down.