What is Normal Distribution ?
The Normal Distribution is also known as Gaussian distribution or bell curve.
The Normal Distribution is a probability distribution that describes how data points are spread out around a central value.
Normal Distribution has numerous application in medical sciences. Normal Distribution is useful to set normal ranges of physiological and diagnostic tests parameters. So it is useful for identifying potential health issues. Normal Distribution is useful for quality control of medical devices and equipment's
Properties of the Normal Distribution:
- It is bell-shaped curve.
- It's symmetrical around the mean.
- The mean, median and mode all have same value.
- Central line from the curve divides data in to two equal parts.
- Area Property :
About 68% of scores fall in the range of the mean +/- 1 SD;
95% in the range of the mean +/- 2 SDs;
99% in the range of the mean +/- 3 SDs..
