Variance analysis is a method used in standard costing to analyze the differences between budgeted costs and actual costs, helping organizations identify areas for cost control and improvement. The assignment content covers various types of variances, including material variance, labor efficiency, overheads, sales value variance, and production volume variance. It also discusses the importance of timely analysis and scoring to cause variances, as well as different methods for disposing of variances such as writing them off or apportioning them to cost of sales, work in progress, and finished goods stock.