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.
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67std, 1std, 2std, 3std of the normal distribution curve.
The normal distribution curve continues to infinity, and therefore exists outside the [+ or -]25 [micro]m limits.
As Figure 3 shows, the distribution of the generator power output in decibels referred to 1 mW is similar in shape to a normal distribution curve but not the same.
Also, for larger sheaths (N1c, N1d ) numerous cases were well described using one normal distribution curve for the size distribution in samples collected at temperatures close to 0[degrees]C (e.
The DILO CV1-system reduces this variation considerably and the normal distribution curve narrows down.