Variance is a measurement of the spread between numbers in a data set. Investors use the variance equation to evaluate a portfolio’s asset allocation.

Companies focus on their fixed costs to maximize profits at the end of the fiscal year. If a company's fixed costs are too high, the company might not create a profit for that fiscal period.

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...