Question

Define normal distribution. State any three properties of normal distribution.

Answer 1

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)