How do I know if my data have a normal distribution?

How do I know if my data have a normal distribution? normal distribution The normal distribution , also referred as bell curve, is very useful due to the central limit theorem Normal distribution states normal distribution A continuous random variable Z is said to be a standard normal random variable, shown as Z∼N, if its PDF is given by fZ=1√2πexp{−

normal distribution A normal distribution is a type of continuous probability distribution in which most data points cluster toward the middle of the range, while the rest taper

new normal STANDARD NORMAL DISTRIBUTION: Table Values Represent AREA to the LEFT of the Z score Z 00 01 02 03 04 05 06 07 08 09 -  A continuous random variable Z is said to be a standard normal random variable, shown as Z∼N, if its PDF is given by fZ=1√2πexp{−