Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
The dataset contains a few extremely high-priced homes that are outliers.
B
The dataset has a balanced distribution of home prices across different ranges.
C
The model consistently predicts prices that are slightly lower than actual prices.
D
The dataset includes homes in various geographical areas with significant price variations.
Understanding the Answer
Let's break down why this is correct
Answer
A bad fit for MSE happens when the target values contain extreme outliers, like a dataset that has one few luxury homes priced at $10 million while most houses are around $300 k. Because MSE squares the error, that single huge mistake would dominate the loss and make the model try to predict every house near $10 million, hurting predictions for the majority. In this case the model is forced to trade off many small errors for one big one, so the loss no longer reflects the typical error we care about. Using a loss that is less sensitive to outliers, such as mean absolute error or a log‑based loss, would give a more realistic picture of performance.
Detailed Explanation
When a few very expensive houses stand out from the rest, MSE squares the errors. Other options are incorrect because A balanced spread of prices does not hurt MSE; Predicting slightly lower prices is a bias, not a problem for MSE.
Key Concepts
Loss Functions
Mean Squared Error
Outliers in Data
Topic
Loss Functions
Difficulty
hard level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
1
Question 1In the context of evaluating predictive models, how do mean squared error (MSE) and mean absolute error (MAE) differ in terms of sensitivity to outliers?
mediumComputer-science
Practice
2
Question 2A data scientist is developing a machine learning model to predict house prices based on features like size, location, and number of bedrooms. After training the model, they notice that the predictions are consistently higher than the actual prices. They decide to use a loss function to evaluate their model's performance. Which loss function would be most appropriate for penalizing these discrepancies effectively?
mediumComputer-science
Practice
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