Mahindra Finance Data Engineer Interview Questions and Answers

Q1. Common ways to evaluate Time Series model
Ans. 
Common ways to evaluate Time Series model include AIC, BIC, RMSE, MAE, ACF, PACF, etc.
• Use Akaike Information Criterion (AIC) and Bayesian Information Criterion (BIC) to compare models

• Calculate Root Mean Squared Error (RMSE) and Mean Absolute Error (MAE) to assess model accuracy

• Analyze Autocorrelation Function (ACF) and Partial Autocorrelation Function (PACF) to check for autocorrelation in residuals
Answered by AI
Add your answer
Q2. Best ways to handle multicollinearity
Ans. 
Use techniques like feature selection, regularization, PCA, and VIF to handle multicollinearity.
• Perform feature selection to choose the most relevant variables for the model.

• Apply regularization techniques like Lasso or Ridge regression to penalize high coefficients.

• Utilize Principal Component Analysis (PCA) to reduce dimensionality and decorrelate variables.

• Check for Variance Inflation Factor (VIF) to identify highly
Answered by AI
Add your answer

Q1. Write a function taking input as string and output a dictionary which will give key as characters in these string and values as their frequency of occurrence
Add your answer
Q2. TF IDF in NLP
Ans. 
TF IDF is a technique used in NLP to measure the importance of a word in a document within a collection of documents.
• TF IDF stands for Term Frequency-Inverse Document Frequency.

• It is used to determine how important a word is in a document relative to a collection of documents.

• TF IDF is calculated by multiplying the term frequency (TF) of a word in a document by the inverse document frequency (IDF) of the word across al...read more
Answered by AI
Add your answer

Create data frame, make histogram

Q1. He asked me to rate my sql and python out of 5 and gave me a scenario and asked to write a sql for it, it was basic left join and case statement question
Add your answer

Q1. This round was basically discussion round with the interviewer, he asked me what i work in and what thing do i take care off as a data scientist
Add your answer

Q1. Why are you choosing this job?
Add your answer
Q2. What do you have qualification to get this job
Add your answer

Q1. About technical skills
Add your answer

Data related to finance

Tell me about yourself

Q1. MSO365, Outlook, zscaler, McAfee DLP, Encryption, bit locker encryption, end user support, hardware and software installation & Support, Technical issue resolved by quickly, Asset management, camera knowle...read more
Add your answer

Q1. Customer support and manage the remote user and resolve issue quickly
Add your answer