Grings - coeficiente de variação aula 8

What the coefficient of variation measures and its interpretation. Review of the formulas for the mean and standard deviation. 2 exercises solved in detail. Subscribe to my CHANNEL to receive FREE classes SITE: http://www.omatematico.com/ Classes on DVD: http://www.lojaomatematico.com.br/ STUDYING has never been so easy! CONTENT: The calculation of the standard deviation for a POPULATION and for a SAMPLE is the same. in time (0:30) How it is represented: in time (0:25) the mean and standard deviation in a population the mean and standard deviation in a sample FORMULA: Coefficient of Variation (per population) = Standard deviation/mean x 100 in time (0:57) Coefficient of Variation (per sample) = Standard deviation/mean x 100 in time (1:13) What does the coefficient of variation measure? Example Check at time (1:38) Conclusion regarding the coefficient of variation: at time (4:00) EXERCISE 1 at time (4:40) EXERCISE 2 at time (8:40) Average formula for data grouped by point at time (11:03) Standard deviation formula at time (12:40)