3. What's the correct order for using a model? Split the data into the training and test sets.fit the model on the train set, clean the data, evaluate model accuracy Clean the data, split the data into training and test sets, fit the model on the train set, evaluate model accuracy. Split the data into training and test sets fit the model on the train set, evaluate model accuracy. Clean the data, fit the model on the entire dataset, split the data into training and test sets, evaluate model accuracy.

The correct order for using a model is:<br /><br />1. Clean the data: This involves removing any irrelevant or incorrect data points, handling missing values, and transforming the data into a suitable format for modeling.<br /><br />2. Split the data into training and test sets: This involves dividing the dataset into two parts: a training set and a test set. The training set is used to train the model, while the test set is used to evaluate the model's performance.<br /><br />3. Fit the model on the training set: This involves training the model on the training set using a specific algorithm or method.<br /><br />4. Evaluate model accuracy: This involves using the test set to evaluate the model's performance and determine how well to new data.<br /><br />Therefore, the correct order is: Clean the data, split the data into training and test sets, fit the model on the training set, evaluate model accuracy.