GRINGS - Cálculo do desvio padrão e da variância aula 6

How to calculate VARIANCE and STANDARD DEVIATION with ungrouped data for sample and population. Subscribe:    / omatematicogrings   WEBSITE: http://www.omatematico.com/ DVD classes: http://www.lojaomatematico.com.br/ Fanpage:   / omatematicocom   STUDYING has never been so easy! Want to help support Prof. Grings: http://www.omatematico.com/ManterO-Pr... CONTENTS: EXERCISE: Calculate the variance and standard deviation of ungrouped data: 2, 3, 4, 3, 5, 4, 3 at time (0:11) FORMULAS: Variance for a Sample and Population at time (0:24) In both formulas, you need to find ∑x² and the Mean at time (0:49) Formula: Mean for a Sample and for a Population at time (1:11) Calculating the Variance for a SAMPLE at time (5:38) Calculating the Standard Deviation at time (7:47) To calculate the Variance for a POPULATION at time (8:50) To calculate the Standard Deviation at time (10:30)