Are you curiously preparing for the data science interview? There are many people out there who might be preparing for the same interview. But how to make yourself stand out from this competition and secure the job?
Today in this blog let us discuss the best data science interview questions to crack your interview.
This will be a guide for you to face the interview confidently. You can learn more from the best data science training institute in Hyderabad. As that helps you by conducting mock interviews and 100% placement assistance.
1. Explain the difference between data science and data analytics
Data science is the field that uses scientific processes, and algorithms and gives insights from raw data.
Whereas data analytics mainly focuses on statistical analysis and solving problems.
2. Can you explain the steps in creating a decision tree?
The steps to create a decision tree is:
- Selecting the best attribute using a selection criterion.
- Splitting the dataset based on this attribute.
- Recursively repeating the process for each child node.
3. Explain the term overfitting and how to prevent it.
Overfitting occurs when a model learns the underlying pattern in the training data and also poor generalization to new data.
Prevention Steps:
- Use cross-validation techniques.
- Apply regularization methods.
- Reduce the number of features or parameters.
- Gather more training data if possible.
4. Explain about confusion matrix, and why is it important.
A confusion matrix is used to evaluate the performance of a classification model.
It is important as it helps in understanding the types of errors and is also essential for calculating metrics.
5. How do you handle missing data in a dataset?
As handling missing data is crucial for building robust models. We should include strategies like:
- For larger gaps, impute missing values.
- Use regression or classification models.
The choice of method depends on the nature and extent of the missing data.
Well-known of these questions will enhance your confidence during interviews. For comprehensive preparation, consider enrolling in the best data science course training institute will help you excel in your data science career.
