Answer – A distribution is called ““skewed” when the mean and median in the distribution falls on different points and the point of point of center of gravity is shifted from one or the other to the left or right. In a normal distribution the mean is the same, the middle and the skewness are absolutely zero (Sκ = 0). There are two types of skewness that appear in the normal curve.
A) Negative skewness: Distribution is said to be negatively skewed or to the left when it is sculpted at the high end of the scale, i.e., towards the lower end of the curve, spread more slowly towards the left, which means the left side of the curve. Negatively in the diagonal distribution, the value of mean is greater than the value of mean.
B) Positive skewness: Distribution is skewed positively or on the right, when the score is massaged; That is, gradually spread towards the left end of the scale, and high or right end.