To assess how well the linear model represents the data based on the residuals, we can analyze the provided residuals: 2.6, 9.3, −5.489, and −6.59.
Residuals indicate the difference between the actual values and the predicted values from the linear model.
- A positive residual (like 2.6 or 9.3) means the actual value was higher than the predicted value.
- A negative residual (like -5.489 or -6.59) means the actual value was lower than the predicted value.
The fact that one of the residuals (9.3) is significantly larger than the others indicates that at least one of the actual data points is quite far from its predicted value. This suggests that there is poor accuracy in the linear model for at least some points.
Therefore, the best conclusion for Jade to make about the linear model based on the given residuals is:
The linear model does not accurately represent the data since the residual 9.3 means that the actual point is far from the estimate.