What threat to validity should lorin be most concerned

Reference no: EM133351435

Lorin is interested in the effect that the COVID-19 pandemic has had on academic performance among college students. She randomly samples 100 college students who began taking classes in fall 2018. She compares their 2018-2019 grade point average (GPA) to their 2020-2021 GPA and finds that there is a significant decrease in the average GPA over time. Tempted to conclude that anxiety about the pandemic caused the decline in academic performance, she realizes that all of the courses offered at the college in 2020-2021 were conducted online. What threat to validity should Lorin be most concerned with? Group of answer choices History Interaction of the causal relationship with units Testing Selection

Reference no: EM133351435

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