The answer to the question "what is a good R-squared value?" depends on the context and the field of study. Here are some general guidelines:
- A high R-squared value indicates that the predictor variables are able to predict the value of the response variable more precisely.
- A low R-squared value doesnt necessarily mean that the model is bad, and a high R-squared value doesnt automatically indicate a good model.
- In some fields, such as the social sciences, even a relatively low R-squared value, such as 0.5, could be considered relatively strong.
- In finance, an R-squared above 0.7 would generally be seen as showing a high level of correlation, whereas a measure below 0.4 would show a low correlation.
- In scientific studies, the R-squared may need to be above 0.95 for a regression model to be considered reliable.
- In other domains, an R-squared of just 0.3 may be sufficient if there is extreme variability in the dataset.
- The correct R-squared value depends on the amount of variability that is actually explainable.
- To find out what is considered a "good" R-squared value, you will need to explore what R-squared values are generally accepted in your particular field of study.
In summary, there is no one-size-fits-all answer to what is a good R-squared value. The answer depends on the context, the field of study, and the objective of the regression model.