A machine learning engineer is evaluating two models. Model A has a mean squared error (MSE) of 16. Model B has a root mean squared error (RMSE) of 5. Which model has a lower standard deviation of prediction errors?

Model A, because its MSE of 16 corresponds to a standard deviation of 4.

Model B, because its RMSE is 5.

The standard deviation cannot be determined from MSE or RMSE.

Both models have the same standard deviation because MSE and RMSE are related.

What does the relative frequency of a category represent?

The difference between the highest and lowest frequencies

The number of times the category appears in the dataset

The most common category in the dataset

The proportion of observations that fall into that category

GIAC Machine Learning Engineer

Domain 1Objective 3

Probability and Frequency GMLE Practice Questions (Page 1)

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 46 practice questions to prepare you well beyond it. (estimate)

46questions here

10free pages

7concepts

Questions 1–5

1expert · medium
A data analyst is reviewing a survey of 200 respondents. 80 respondents are male, and 120 are female. Among males, 30 prefer product A. Among females, 60 prefer product A. What is the relative frequency of respondents who prefer product A?
Select an answer first
2expert · hard
A machine learning engineer is evaluating two models. Model A has a mean squared error (MSE) of 16. Model B has a root mean squared error (RMSE) of 5. Which model has a lower standard deviation of prediction errors?
Select an answer first
3foundation · easy
What does the relative frequency of a category represent?
Select an answer first
4application · easy
A website logs 200 visits; 80 are from mobile devices. What is the relative frequency of mobile visits?
Select an answer first
5application · medium
A spam filter classifies 95% of spam emails correctly and 98% of legitimate emails correctly. Spam makes up 20% of all emails. What is the probability that an email classified as spam is actually spam?
Select an answer first

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Probability and Frequency GMLE Practice Questions (Page 1)

Questions 1–5

A data analyst is reviewing a survey of 200 respondents. 80 respondents are male, and 120 are female. Among males, 30 prefer product A. Among females, 60 prefer product A. What is the relative frequency of respondents who prefer product A?

A machine learning engineer is evaluating two models. Model A has a mean squared error (MSE) of 16. Model B has a root mean squared error (RMSE) of 5. Which model has a lower standard deviation of prediction errors?

What does the relative frequency of a category represent?

A website logs 200 visits; 80 are from mobile devices. What is the relative frequency of mobile visits?

A spam filter classifies 95% of spam emails correctly and 98% of legitimate emails correctly. Spam makes up 20% of all emails. What is the probability that an email classified as spam is actually spam?

Keep studying — Foundational Data Science and Statistics