FICO Data Scientist Interview Questions and Answers

Multicollinearity can be treated by using techniques like feature selection, PCA, or regularization. Imbalanced datasets can be addressed by resampling techniques like oversampling or undersampling.

• For multicollinearity, consider using techniques like feature selection to remove redundant variables, PCA to reduce dimensionality, or regularization like Lasso or Ridge regression.

• For imbalanced datasets, try resampling te...read more

Logistic regression is a statistical model used to predict the probability of a binary outcome based on one or more predictor variables.

• Logistic regression is used when the dependent variable is binary (0/1, True/False, Yes/No, etc.)

• It estimates the probability that a given observation belongs to a particular category.

• The output of logistic regression is a probability score between 0 and 1.

• It uses the logistic function...read more

Developed a predictive model for customer churn using machine learning algorithms.

• Used Python and scikit-learn library for data preprocessing and model building

• Performed feature engineering to improve model performance

• Evaluated model performance using metrics like accuracy, precision, and recall

Work experience refers to the practical knowledge and skills gained from employment in a specific field or industry.

• Work experience includes tasks, responsibilities, and projects completed in a professional setting.

• It can be gained through internships, part-time jobs, full-time positions, or volunteer work.

• Work experience helps individuals develop industry-specific skills, build a professional network, and gain a bette...read more

SQL is a programming language used for managing and querying databases. Power BI is a business analytics tool for visualizing and analyzing data.

• SQL stands for Structured Query Language and is used to communicate with databases.

• SQL can be used to retrieve, update, and manipulate data in databases.

• Power BI is a data visualization tool that allows users to create interactive reports and dashboards.

• Power BI can connect to...read more