"discrepancies in the calculation" is a perfectly correct and usable phrase in written English.
Here is an example sentence: "We identified numerous discrepancies in the calculation, which caused delays in our project timeline."
The quantum electrodynamics theory, developed between 1945 and 1955, subsequently resolved some minute discrepancies in the calculations of certain atomic properties.
One popular solution is a hypothesized feature of nature known as supersymmetry, which would cause certain mathematical discrepancies in the calculations to cancel out, as well as produce a plethora of previously undiscovered particles — known collectively as wimps, for weakly interacting massive particles — and presumably a passel of Nobel prizes.
The overall Ne estimate for Peru was high based on 5 loci (Ne = 1161.1, 95% CI: 599.9 – 6815.7), and more moderate based on all 7 amplified loci (Ne = 379, 95% CI: 316.5 – 464.8), which demonstrates a discrepancy in the calculation based on 5 vs. 7 loci.
The present formulation of HBM for column optimization is prompted by some discrepancies in the volume calculations and the specification of the spring stiffness at the clamped end in Krishna and Ram (2007) discrete link-spring model formulation.
The numbers of pneumococcal deaths averted for IPD and hospitalized pneumonia for each influenza scenario are presented in Figure 11 (note: discrepancies in the difference calculations are due to rounding).
Discrepancies between the studies in the calculation of JPE and test procedures used may partly explain the conflicting evidence.
Despite its extensive applications, there are major issues and limitations in fractal analysis, including the unrealistic assumption of self-similarity for natural phenomena, discrepancies in fractal calculation from using different algorithms, and oversimplifying the representation of complex systems by a single index.
It is seen that these discrepancies are caused by the differences in the calculation methodology adopted by the 2 systems.
