In Bayesian statistics, what does the prior probability represent?

The probability of the evidence given that the hypothesis is true

The updated probability of the hypothesis after seeing the data

The probability of the hypothesis being true after all possible evidence is collected

The initial belief about the hypothesis before observing new data

A study finds a strong positive correlation between ice cream sales and drowning incidents. What is the most appropriate conclusion?

Ice cream consumption causes drowning.

The correlation is spurious and should be ignored.

Drowning causes people to buy ice cream.

There is a correlation, but causation cannot be determined from this study alone.

A 95% confidence interval for the population mean is calculated as (10, 20). What is the correct interpretation?

If we repeated the sampling process many times, approximately 95% of the computed confidence intervals would contain the population mean.

There is a 95% probability that the population mean lies between 10 and 20.

There is a 95% chance that the sample mean is between 10 and 20.

95% of the sample data values fall between 10 and 20.

GIAC Machine Learning Engineer

Domain 1Objective 4

Statistics Fundamentals GMLE Practice Questions (Page 3)

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 11–15

11foundation · easy
In Bayesian statistics, what does the prior probability represent?
Select an answer first
12foundation · easy
A study finds a strong positive correlation between ice cream sales and drowning incidents. What is the most appropriate conclusion?
Select an answer first
13expert · hard
A data team wants to estimate the average customer satisfaction score for a large user base. They have limited budget and need a confidence interval of ±2 points with 95% confidence. The population standard deviation is unknown but estimated from a pilot study as 10. Which sample size is most appropriate?
Select an answer first
14application · medium
A data analyst is summarizing the test scores of a class. The scores are: 55, 60, 65, 70, 75, 80, 85, 90, 95, 100. Which measure of dispersion is most appropriate to describe the spread of these scores?
Select an answer first
15foundation · easy
A 95% confidence interval for the population mean is calculated as (10, 20). What is the correct interpretation?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to GMLE

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by GIAC (SANS). “GMLE” is a trademark of its owner, used for identification only.

Statistics Fundamentals GMLE Practice Questions (Page 3)

Questions 11–15

In Bayesian statistics, what does the prior probability represent?

A study finds a strong positive correlation between ice cream sales and drowning incidents. What is the most appropriate conclusion?

A data analyst is summarizing the test scores of a class. The scores are: 55, 60, 65, 70, 75, 80, 85, 90, 95, 100. Which measure of dispersion is most appropriate to describe the spread of these scores?

A 95% confidence interval for the population mean is calculated as (10, 20). What is the correct interpretation?

Keep studying — Foundational Data Science and Statistics