CompTIADataX
Domain 1Objective 1
Statistical Methods DY0-001 Practice Questions (Page 2)
Part of the Mathematics and statistics domain, which accounts for 17% of the DY0-001 exam. CompTIA does not publish an official question count, but from its 165-minute exam (~65–110 total, ~11–19 in this domain), expect 3–5 from this objective — we provide 31 practice questions to prepare you well beyond it. (estimate)
31questions here
7free pages
11concepts
17%of the exam
Questions 6–10
- 6
A data scientist is evaluating the effectiveness of three different training programs on employee productivity. Productivity scores are measured for 20 employees in each program. The data are normally distributed and the variances are approximately equal. Which test is most appropriate to determine if there is a significant difference in mean productivity among the three programs?
Select an answer first - 7
A data scientist wants to compare the average customer satisfaction scores across three different store locations. Which statistical test is most appropriate?
Select an answer first - 8
In a chi-squared test for independence, what is being compared?
Select an answer first - 9
If a hypothesis test yields a p-value of 0.03 at a significance level of 0.05, what is the correct conclusion?
Select an answer first - 10
A data analyst is comparing the test scores of students from two different teaching methods. Method A has 25 students with a mean score of 78 and a standard deviation of 10. Method B has 30 students with a mean score of 82 and a standard deviation of 12. The analyst wants to test if there is a significant difference in mean scores. The variances are not assumed to be equal. Which test should be used?
Select an answer first
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