The part of the sentence "discrepancy in how" is correct and can be used in written English.
This phrase is often used to introduce a comparison between two or more similar things, and to suggest that there is a difference or discrepancy between them. For example: "There is a discrepancy in how the two candidates view the current economic situation."
However, the discrepancy in how many graves Mr. Mulk saw versus the number of people the government reported had been killed points to some of the difficulties in assessing civilian casualties.
In the wake of Armstrong's death, there may be some discrepancy in how the phrase will be rendered, just as in the ensuing years, there has been controversy as to what exactly Armstrong said as he lighted out from the ladder, becoming the first member of mankind to stand on a celestial body other than earth.
All but one trial had at least one discrepancy in how trial details, results, or side effects were reported.
These contrasting opinions indicate that although specialists find ECS beneficial to their ability to plan for their classes and the time that it takes to do so, there is some discrepancy in how this benefit is viewed.
…I understand that there may be a discrepancy in how Google treats student data obtained through its core Google Apps for Education GAFEE) services – products that are deemed educational – versus how Google treats student data obtained through other Google services that are not deemed educational, such as Google Search, Google Maps, or YouTube.
There is also a slight discrepancy in how race is calculated between the admissions and institutional research (IR) and assessment departments.
There were discrepancies in how the two main political parties are interpreting the proposed law.
He spent nights listening to audio recordings from the sting operation, pointing out discrepancies in how the conversations were translated.
"He toured Arab villages," Ms. Ritvo-Slifka said, "and was troubled at the discrepancies in how they lived".
The study found great discrepancies in how these services are sold, with the highest rates charged in the neighborhoods that have the most tax preparation and loan offices.
Computers were instituted to standardize the system, but the judges create the input for the computer, so there are wide discrepancies in how a bout is scored.
