A pharmaceutical company tests a new drug against a placebo. The p-value for the primary endpoint is 0.06. Which conclusion is most appropriate?

Reject the null hypothesis because p is close to 0.05.

Accept the null hypothesis and conclude the drug has no effect.

The result is marginally significant and should be reported as a trend.

Fail to reject the null hypothesis at the 0.05 significance level; the result is not statistically significant.

Which statistical measure quantifies the strength and direction of a linear relationship between two continuous variables?

Pearson correlation coefficient

Coefficient of determination (R-squared)

A researcher wants to study the average income of residents in a city that has diverse neighborhoods. To ensure each neighborhood is proportionally represented, which sampling method should be used?

Cluster sampling by selecting a few neighborhoods

Stratified random sampling by neighborhood

Convenience sampling from a shopping mall

Simple random sampling from the entire city

GIAC Machine Learning Engineer

Domain 1Objective 4

Statistics Fundamentals GMLE Practice Questions (Page 5)

Part of the Foundational Data Science and Statistics domain, which makes up ~41% of our current practice bank. GIAC (SANS) does not publish an official question count, but from its 180-minute exam (~70–120 total, ~29–49 in this domain), expect 7–12 from this objective — we provide 49 practice questions to prepare you well beyond it. (estimate)

49questions here

10free pages

10concepts

Questions 21–25

21application · medium
A pharmaceutical company tests a new drug against a placebo. The p-value for the primary endpoint is 0.06. Which conclusion is most appropriate?
Select an answer first
22foundation · easy
Which statistical measure quantifies the strength and direction of a linear relationship between two continuous variables?
Select an answer first
23expert · hard
A researcher wants to study the average income of residents in a city that has diverse neighborhoods. To ensure each neighborhood is proportionally represented, which sampling method should be used?
Select an answer first
24foundation · easy
A researcher wants to ensure every member of a population has an equal chance of being selected for a survey. Which sampling method should be used?
Select an answer first
25application · medium
A data scientist is modeling the time until a server fails. The failure rate is constant over time. Which distribution is most appropriate for modeling the time between failures?
Select an answer first

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Statistics Fundamentals GMLE Practice Questions (Page 5)

Questions 21–25

A pharmaceutical company tests a new drug against a placebo. The p-value for the primary endpoint is 0.06. Which conclusion is most appropriate?

Which statistical measure quantifies the strength and direction of a linear relationship between two continuous variables?

A researcher wants to study the average income of residents in a city that has diverse neighborhoods. To ensure each neighborhood is proportionally represented, which sampling method should be used?

A researcher wants to ensure every member of a population has an equal chance of being selected for a survey. Which sampling method should be used?

A data scientist is modeling the time until a server fails. The failure rate is constant over time. Which distribution is most appropriate for modeling the time between failures?

Keep studying — Foundational Data Science and Statistics