ExcelR Solutions Data Science Intern Interview Questions and Answers

Understanding outliers, missing values, overfitting, and underfitting in data science.

• Outliers are data points that significantly differ from other data points in a dataset.

• Missing values are data points that are not present in a dataset.

• Overfitting occurs when a model learns noise in the training data rather than the underlying pattern.

• Underfitting occurs when a model is too simple to capture the underlying pattern in...read more

To swap two numbers, store one number in a temporary variable, then assign the second number to the first, and finally assign the temporary variable to the second number.

• Store one number in a temporary variable

• Assign the second number to the first number

• Assign the temporary variable to the second number

Printing hello world is a common introductory programming task.

• Use a print statement in the programming language of your choice.

• For example, in Python: print('Hello, World!')

• In Java: System.out.println('Hello, World!')

Establishing a connection with students is crucial for effective teaching.

• Show genuine interest in their lives and hobbies

• Use humor and relatable examples to make lessons engaging

• Provide opportunities for student input and feedback

• Be approachable and available for one-on-one conversations

• Create a positive and inclusive classroom environment