Question

What is your understanding of normal distribution?

Answer 1

Normal distribution is a probability distribution that is symmetric about
the mean.
In other words, data close to the mean is more frequent than data far from the mean.
Normal distribution is another term for a probability bell curve.
A normal distribution is symmetric. That implies that 68% of the observations
are within +/- 1 standard deviation from the mean, 95% of the observations are within 2 +/- standard
deviations from the mean, and 99.7% of the observations are within 3 +/- standard deviations from the mean.