ABCDEF Data Scientist Interview Questions and Answers

Bias-variance tradeoff is the balance between underfitting and overfitting in machine learning models.

• Bias refers to error from erroneous assumptions in the learning algorithm, leading to underfitting.

• Variance refers to error from sensitivity to small fluctuations in the training set, leading to overfitting.

• The tradeoff involves finding the right level of model complexity to minimize both bias and variance.

• Regularizati...read more

SQL code to find 2nd highest salary

• Use the MAX() function to find the highest salary

• Use the WHERE clause to exclude the highest salary

• Order the salaries in descending order and limit the result to 1