The phrase "a formal error" is correct and usable in written English.
It can be used to refer to a mistake that follows a specific set of rules or standards, often in a formal context such as academic writing or legal documents.
Example: "The report was rejected due to a formal error in the citation format."
Alternatives: "a procedural mistake" or "an official error".
The method permits a formal error analysis that agrees with numerical results.
Finally, a formal error analysis for the resulted regression models has been conducted to validate its forecast capacity.
A formal error analysis, however, can be complicated and is often confined to the realm of experts in numerical analysis.
It enabled officers to scrutinise the records to the extent of conducting data analysis and building a spreadsheet before, after several months, they eventually lodged "a formal error report".
But it was months before the Met, having reviewed the data to the extent of making a spreadsheet of the material, contacted the IOCCO to lodge "a formal error report".
The paper also derives new expressions for the rounding error accumulated during ideal real to floating-point and fixed-point transitions at the algorithmic level and performs a formal error analysis for the OFDM modem in HOL.
There is an absence of formal error tracking systems in public sector hospitals of Pakistan and also a lack of literature concerning error reporting culture in the health care sector.
As an approximation of the formal error, the fraction between the mean spectral power (noise power) of the LSP and the peak spectral power (corresponding to the reflector height measurement) of the LSP is taken and multiplied with a factor of 0.2 (see the grey error bars in Figure 5).
This shows in black predictions for the rate of change of the axial dipole in units of nT/yr from the GRIMM-2 time-dependent field model (constrained by CHAMP satellite and observatory data between 2001.0 and 2009.5) along with formal error bars, including an extrapolation back to 2000.2 and forward to 2010.8.
Rate of change of the axial dipole (in units of nT/yr) from model GRIMM-2 (bars showing formal error estimates), along with a maximum entropy fit and extrapolation (red).
The largest errors are likely biases caused by unmodelled sources (Sabaka et al. 2015) which cannot be assessed using a formal model error covariance matrix, or by constructing models using the same technique from independent datasets.
