"alternative assumption" is correct and usable in written English.
You can use it to refer to a different assumption that you want to consider. For example, "I believe that the chances of success are slim, but as an alternative assumption, it's possible that it could be successful."
An alternative assumption, in which equivalent persons are regarded as the appropriate units, is found to give rise to a different optimal consumption path.
This alternative assumption raises the gains from free trade in goods by $174 billion (or thereabouts).These rival assumptions are not right or wrong, but they illustrate how far the results of CGE models flow from the presuppositions of their authors.
This alternative assumption would complicate the analysis.
Similarly, one can obtain the same conclusion under the following alternative assumption.
Thanks to the nested structure (Tutz 2012), we can remove the independence of irrelevant alternative assumption.
We propose a rigorous account for power and sample size calculations under a variety of genetic risk models without resorting to the commonly used contiguous alternative assumption.
In trying to replace it he needs, of course, to suggest alternative assumptions.
Exploring the implications of alternative assumptions is likely to lead to better policy than making a single blanket recommendation.
Our purpose was to acknowledge the uncertainties and show how alternative assumptions yield different scenarios for the world order.
Under alternative assumptions on the investment technology and the reliability measure, other network architectures can emerge as efficient and stable.
To identify the most suitable model representation, phytoplankton was simulated and compared to actual observed data under three alternative assumptions.
