Abstract:The ability to communicate statistical results to domain experts and stakeholders is an important goal of the undergraduate statistics and data science curriculum. However, as large language models (LLMs) have become more accessible, a major concern is that students are offloading important cognitive tasks to generative AI. Using a corpus of over 1,600 undergraduate students' data analysis reports from 2021 to 2025, we show how students' writing style and verb usage have become more similar to that of LLMs. This shift is most pronounced in the first and fifth quintiles of students' reports, which roughly map onto the introduction and conclusion sections, respectively. At the same time, we demonstrate that students' writing style has become more similar to that of statistics experts with the addition of LLMs. We end by discussing the implications of our findings for statistics and data science educators. In particular, we propose alternative modes of assessment that still emphasize statistical thinking, such as targeted writing assignments for structuring a report introduction.
From: Sara Colando [view email]
[v1]
Mon, 22 Jun 2026 00:27:48 UTC (1,024 KB)
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