PQ Systems Knowledge Base

Category » Kurtosis & Skewness

There were 3 articles found in this category:

1. ST: Skewness
   Revision Date: 2005-09-06 Skewness is the measure of the asymmetry of a histogram (frequency distribution).  A histogram with normal distribution is symmetrical. In other words, the same amount of data falls on both sides of the mean. A normal distribution will have a skewness of 0 ...
2. ST: Kurtosis - Is there an ideal value for a perfectly-shaped distribution?
   Revision Date: 2005-09-06 Kurtosis is a measure of how peaked the distribution is. It is based on the fourth moment about the mean, and is therefore always positive and bound by zero on the lower end. Kurtosis for the normal distribution is 3.0. Most quality software subtracts from the s ...
3. ST: Kurtosis
   Revision Date: 2005-09-06 Kurtosis is a measure of the combined weight of the tails in relation to the rest of the distribution. As the tails of a distribution become heavier, the kurtosis value will increase. As the tails become lighter the kurtosis value will decrease. A histogram with a ...