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Exam DA0-001 topic 1 question 151 discussion

Actual exam question from CompTIA's DA0-001
Question #: 151
Topic #: 1
[All DA0-001 Questions]

Which of the following statistical methods can be used to measure changes over time?

  • A. Correlation test
  • B. Independent chi-squared test
  • C. Dependent t-test
  • D. Z-test
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Suggested Answer: C 🗳️

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Swift_and_Quick
6 months, 3 weeks ago
A dependent t-test, also known as a paired t-test, is used to determine whether there is a significant difference between the means of two related groups. In the context of measuring changes over time, the dependent t-test is commonly used when the same subjects are measured at two different points in time (e.g., before and after an intervention). It assesses whether there is a significant difference in the mean scores of the dependent variable between the two time points. So, the correct answer is: C. Dependent t-test
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