DP-100 · Question #89
You are analyzing a dataset containing historical data from a local taxi company. You arc developing a regression a regression model. You must predict the fare of a taxi trip. You need to select…
The correct answer is D. a Root Mean Square Error value that is high F. an F 1 score that is low. To correctly evaluate a regression model predicting taxi fares, two appropriate performance metrics need to be identified from the given options.
Question
Options
- Aan F1 score that is high
- Ban R Squared value dose to 1
- Can R-Squared value close to 0
- Da Root Mean Square Error value that is high
- Ea Root Mean Square Error value that is tow
- Fan F 1 score that is low.
How the community answered
(36 responses)- A3% (1)
- B3% (1)
- C6% (2)
- D89% (32)
Why each option
To correctly evaluate a regression model predicting taxi fares, two appropriate performance metrics need to be identified from the given options.
An F1 score is a classification metric, not typically used for directly evaluating continuous regression models, regardless of whether it is high or low.
An R-squared value close to 1 indicates a good regression model fit, meaning the model explains a high proportion of variance in the dependent variable.
An R-squared value close to 0 indicates a poor regression model fit, meaning the model explains very little of the variance in the dependent variable.
Root Mean Square Error (RMSE) is a standard regression metric that quantifies the average magnitude of the errors between predicted and actual values; a high value indicates a poor model fit.
A low Root Mean Square Error value indicates good regression model performance, meaning the predictions are close to the actual values.
While primarily a classification metric, an F1 score can theoretically be computed if the regression model's continuous output is subsequently binarized via a threshold, and a low score would reflect poor performance in such a derived classification task.
Concept tested: Regression model evaluation metrics
Source: https://learn.microsoft.com/en-us/azure/machine-learning/v1/how-to-evaluate-model?view=azureml-api-1
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