When are errors more likely to occur during data entry?

Errors in data entry are more likely to occur when data is handwritten and then entered by an operator because this process involves multiple steps that can introduce mistakes. Handwriting can be difficult to read and interpret, which increases the likelihood of misinterpretation during the input phase. Even a single misread character or word can lead to substantial errors in the data.

Additionally, the operator must rely on their ability to accurately see and understand the handwritten notes, which can vary based on factors such as handwriting clarity, familiarity with the content, and even the operator's subjective interpretation. This step creates additional room for human error, as opposed to when data is directly typed or handled through automated systems, which are generally designed to reduce mistakes through standardized input methods or validation checks.

Thus, the combination of poor legibility, subjective interpretation, and the multi-step process makes this method particularly prone to errors.