Define normal distribution. State any three properties of normal distribution.
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a function that represents the distribution of many random variables as a symmetrical bell-shaped graph. The normal curve is symmetrical about the mean μ;
The mean is at the middle and divides the area into halves;
The total area under the curve is equal to 1;
It is completely determined by its mean and standard deviation σ (or variance σ2)
The mean is at the middle and divides the area into halves;
The total area under the curve is equal to 1;
It is completely determined by its mean and standard deviation σ (or variance σ2)
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