# Certified-Machine-Learning-Professional — Question 424

**Type:** multiple_choice
**Topics:** topic_1

## Question

Which of the following describes concept drift?

## Correct Answer

_See scenario._

## Explanation

C. Concept drift is when there is a change in the relationship between input variables and target variables.

Concept drift refers to the situation when the statistical properties of the target variable, which the model is trying to predict, change over time in unforeseen ways. This causes the model to become less accurate as time passes.

**Reference:** examtopics_top_comment

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