The phrase "are merely estimates" is correct and usable in written English.
It can be used when discussing approximations or predictions that are not exact and should be understood as such.
Example: "The figures provided in the report are merely estimates and should be interpreted with caution."
Alternatives: "are simply approximations" or "are just rough calculations".
These numbers are merely estimates, however, because several of the states that held caucuses do not report raw popular vote numbers.
But in reality many benchmark prices for oil and other commodities are merely estimates based on incomplete information from unregulated, illiquid markets.
These numbers are merely estimates from past years, but they give us an idea that about 2-32-3% US citizens are barred from voting because they are (or have been) felons.
Though most colleges are sure to include a caveat alongside their calculators — that figures are merely estimates, not guarantees or formal agreements — experts say some tools may be misleading.
These costs are merely estimates of how much overall investment has gone into development, and serve to indicate the break-even point where it would be feasible to pursue in-house model development.
8 9 BMI and BMIz are merely estimates of body fatness as these indices do not differentiate between the types of tissue that contribute to body weight (fat, muscle or bone mass).
In the previous version of the manuscript, surface-to-volume ratios were not reported because they were merely estimated and not measured, as explained in the Materials and methods of the initial submission.
Further, if available, we wanted to know whether these data elements were easy to access or only after time consuming actions, whether hospitals calculated the indicator on basis of the entire population at risk, or whether the PI score was merely estimated.
One caveat to this research is that with incomplete genome sequence data and degenerate PCR-based assays, the estimates of GH32 gene number are merely lower estimates; additional copies may exist that were not detected.
The ornithologic data we have presented are merely crude estimates.
We acknowledge, however, that these reconstructions are merely broad estimates of potential refugial conditions for L. rufescens and lack constraining data for the earlier half of the epoch.
