The phrase "a good approximation where" is correct and usable in written English.
It can be used when discussing a situation or context in which something is considered to be a close estimate or representation.
Example: "In this model, we find a good approximation where the variables are closely related."
Alternatives: "a reasonable estimate in which" or "an acceptable approximation in cases where".
This result demonstrates that approximation (a) used in (4 - 7) is a good approximation when N = 1024.
However, a manual approach would have been infeasible for the amount of data needed to generate statistically significant conclusions, and we believe that the location information entered by GitHub users is at least a good approximation of where Brazil's developers are actually located.
Based on Figure 10, 0.25 is a good approximation of Δ, where the envelope difference of an interfered wake-up signal is less than Δ with a low MC code error rate (on the order of 10-4).
If tknown were based on a random sample, the results described in Section the results of the present study suggest that tknown would be a good approximation of tactual where tactual was known for more than 10.4% of crimes.
In this initial study we simplify the calculations by assuming the solid particles remain in the position where they are formed: a good approximation for the case where the solution is cooled from above to form ice leaving behind a relatively light residual liquid, or cooled from below leaving behind a relatively heavy liquid.
This assumption is a good approximation for a system, where the individual user's data rate is much lower than the total data rate of the system [20].
A good approximation for the ergodic capacity, where links are independent and not identically distributed, was given in [7, equation (16)].
In this sense, these animals were not a good approximation of the human condition, where plasma levels are highly variable and absolutely dependent on dietary intake 25, 26.
Although CNR under-represents the disease burden for any country [ 4], it is often a good approximation of incidence in settings where health care system, diagnostics and reporting of tuberculosis is of reasonable quality [ 9].
