How would you explain the analysis of variance, assuming that your audience has not had a statistics class before?

How would you explain the analysis of variance, assuming that your audience has not had a statistics class before?
How would you explain the analysis of variance, assuming that your audience has not had a statistics class before?
Read Statistics for Nursing Research: A Workbook for Evidence-Based Practice and “Analysis of Variance,” by Project Leader: David M. Lane, from Online Statistics Education: A Multimedia Course of Study.
http://onlinestatbook.com/2/analysis_of_variance/ANOVA.html
please write 6 discussion posts based on this topic. Each most include minimum 4 substantial sentences with proper citations.