CompTIADataX
Domain 1Objective 3
Linear Algebra and Calculus 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 21 practice questions to prepare you well beyond it. (estimate)
21questions here
5free pages
7concepts
17%of the exam
Questions 6–10
- 6
What is the chain rule used for in calculus?
Select an answer first - 7
A data scientist is working with a neural network where the activation function is sigmoid: σ(z) = 1 / (1 + e^(-z)). The input to the sigmoid is z = 2x + 3. They need to compute the derivative of the output with respect to x for backpropagation. What is dσ/dx?
Select an answer first - 8
What does the partial derivative ∂f/∂x of a function f(x, y) represent?
Select an answer first - 9
A data analyst is working with a model that predicts the probability of an event. The model outputs a value p between 0 and 1. They want to transform this probability into a log-odds (logit) scale for a linear model. The formula is log(p / (1 - p)). For a probability of p = 0.5, what is the logit value?
Select an answer first - 10
If h(x) = (3x + 1)^2, what is h'(x) using the chain rule?
Select an answer first
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