The phrase "alternative calculation" is correct and usable in written English.
It can be used when referring to a different method or approach for performing a calculation or solving a problem.
Example: "If the initial estimate seems off, we can always perform an alternative calculation to verify the results."
Alternatives: "different computation" or "substitute calculation".
"It's obvious that the alternative calculation let firms understate the segregation requirements," Mr. Koutoulas said.
The firm used this "alternative calculation" when reporting its customer account levels to regulators.
The alternative calculation not only jeopardized customer assets, but also obscured MF Global's mounting problems and shielded the firm from regulators.
Although MF Global reported only the alternative calculation to regulators, it prepared its own segregation report every day that showed the true extent of its liabilities.
The new rule would strike down the exemption, known as the "alternative calculation," which contradicts a cornerstone of the industry to always segregate client cash.
The alternative calculation almost always resulted in a lower amount — sometimes much lower — that needed to be segregated in foreign accounts, because it covered only options and futures.
Mr Garner and Ms Qiao's alternative calculations imply instead that rebalancing is under way.
These alternative calculations not only show that depression is 10 times worse than any other illness bar none, they also highlight how male depressives might manage to disappear from the data.
Alternative calculations based on headache yesterday (with little recall error) produced, for all headache, a corroborating 1.7%.
We have calculated a scenario for one million years using the present-day global ocean volume (1.37 × 1021 L) but alternative calculations can be quickly performed for different volumes (e.g., if the Hadean ocean had twice the volume of the present-day ocean, the NH4+ concentrations in Fig. 12 and Tab 7 would be 50% smaller).
Under those alternative calculations the CBO concluded that as many as 20 million fewer people will get health insurance at work -- but that as many as 3 million might actually gain coverage through their jobs.
