Mercer Senior Manager Analytics Interview Questions and Answers

Combination logic on python

Q1. Explain classification
Ans. 
Classification is a machine learning technique used to categorize data into different classes or categories based on past observations.
• Classification involves training a model on labeled data to predict the class of new, unseen data points.

• Common algorithms for classification include logistic regression, decision trees, support vector machines, and k-nearest neighbors.

• Examples of classification tasks include spam email...read more
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Q1. What is stemming and lematization
Ans. 
Stemming and lemmatization are techniques used in natural language processing to reduce words to their base or root form.
• Stemming is a process of reducing words to their base form by removing suffixes.

• Lemmatization is a process of reducing words to their base form by considering the context and part of speech.

• Stemming is faster but may not always produce a valid word, while lemmatization is slower but produces valid wo...read more
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Q2. Python coding about default values in class and funtions
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Q3. Kmeans clustering evaluation
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Q4. How to measure multicollinearity
Ans. 
Multicollinearity can be measured using correlation matrix, variance inflation factor (VIF), or eigenvalues.
• Calculate the correlation matrix to identify highly correlated variables.

• Use the variance inflation factor (VIF) to quantify the extent of multicollinearity.

• Check for high eigenvalues in the correlation matrix, indicating multicollinearity.

• Consider using dimensionality reduction techniques like principal componen
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Q1. About BER GPT and transformers
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Q2. Natural language processing
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Machine Learning, Metrics

Q1. Questions on PowerBI & Power Query
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Q1. Interpersonal communication skills
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Q1. Alteryx technical questions
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Q1. Alteryx, Power BI, Project & People management, Agile discussion
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Q1. Client Managerial discussion
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Simple Data Science Case Study

Q1. Python knowledge related questions
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Data Science Case Study

Q1. Mostly related to current profile, and skills for using excel, PowerPoint, and aptitude skills.
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Q1. Somewhat similar questions but detailed and this was with the team manager
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