Asymmetry measures

Asymmetry measures

1. is a measure of form, of a distribution, that allows to identify and describe the way of how the data tend to gather (of according to the frequency with which they are within the distribution).

   • allows to identify the characteristics of a distribution of data, without the need to generate the graph

2. Negative or Left Asymmetry

   • occurs when in a distribution, the minority of the data is in the left side (of the middle).
     • presents: an elongation or bias to the left
       • the distribution of the data, has a longer tail on the left, than on the right
     • It is also asymmetric, when the value of the skewed mean is: less than the median and this median value (at its time) is less than the median

3. Positive or Right Asymmetry

   • occurs when, in a distribution, the minority of the data is in the part right of the arithmetic mean
     • has an elongation or bias to the right
       • the distribution of the data, has a longer tail to the right, that on the left
     • • Also featured when the mean value arithmetic is: greater than median and this value of the median (in turn), is greater that fashion

4. Symmetric

   • occurs when in a distribution, distribute (approximately) the same amount of data, both sides of the arithmetic mean
     • is represented by a curve normal (bell-shaped), called Gaussian bell or also Laplace
   • does not have elongation or bias
     • a distribution is symmetric, when its arithmetic mean, its median and its fashion are the same.

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