Average and Median Earnings. As of 2011, electricians earned an average of $52,910 per year, according to the Bureau of Labor Statistics. The average hourly pay for an electrician was estimated to be $25.44.The median annual income of electricians in the United States was $49,320, and the median-earning 50 percent of electricians made between $37,570 and $65,260 a year.s of 2011, the highest-paid electricians were those who taught at business schools. These workers earned an average of $79,250 a year. Most electricians worked as building equipment contractors, earning an average annual income of $52,600.
The contribution margin, sometimes used as a ratio, is the difference between a company's total sales revenue and variable costs. In other words, the contribution margin equals the amount that sales exceed variable costs. This is the sales amount that can be used to, or contributed to, pay off fixed costs.
$92,000 Net revenue - $52,000 Variable expenses = $40,000 Contribution margin. This ratio is only used from the perspective of deriving the lowest possible acceptable price for a unit. In reality, a variety of other pricing concepts can be used to establish higher price points for products.ontribution margin is the revenue from a sale transaction, less all variable costs associated with that sale. The resulting margin represents the amount of cash that is available for paying fixed costs and earning a profit.