"Large variance" means that there is a significant difference or spread between different values in a set of data. It indicates that the numbers or outcomes are diverse or widely varied. Full definition
In South - East females, δ13C values were lower in autumn compared to spring and females seemed less selective in their diet as depicted by large variances in stable isotope values. (polarbearscience.com)
If large variances exist between an investor's independent analysis and a company's depiction, further study should be done to either reconcile differences or confirm a company's mischaracterization of its customer base. (microventures.com)
But a market like 2009 showed large variances in what people wanted and in incentives, which made us scramble for the right product at the right time. (digitaldealer.com)