Skewness Positif. If the data is positively skewed the coefficient is positive. Positive right skewness example.
When the two tails are equal in size meeting in the middle of the data set then it has zero skew and a symmetric outcome distribution. For test 5 the test scores have skewness 2 0. The histogram shows a very asymmetrical frequency distribution.
And the median is less than the mean.
When the two tails are equal in size meeting in the middle of the data set then it has zero skew and a symmetric outcome distribution. The smallest value can be zero and the long life of the bulbs will make the distribution skewed towards the right. In probability theory and statistics skewness is a measure of the asymmetry of the probability distribution of a real valued random variable about its mean. One measure of skewness called pearson s first coefficient of skewness is to subtract the mean from the mode and then divide this difference by the standard deviation of the data.
