LESSON 8

MEASURES OF CENTRAL TENDENCY, POSITION AND SPREAD.

While it is raining cat and dogs, I use my time to explain how to statistics.
This lesson is not my intention to explain the theory, because if you've got here I hope you have learned or theory you've got another thing coming !!! :-)

There are 3 types of statistical measures:

* Measures Position: here remember concepts as percentiles, deciles and quartiles.
* Measures of central tendency: and here we must remember how to calculate the mean, median and mode
* Measures of dispersion: learn to calculate the range, mean deviation and standard deviation.

Another important concept is the bell "Gauss" in statistics is called normal distribution is symmetric and the mode, median and mean are similar.