Ventra Health Data Analyst Intern Interview Questions and Answers

Q1. What is random forest
Ans. 
Random forest is an ensemble learning method used for classification and regression tasks.
• Random forest is a collection of decision trees that are trained on random subsets of the data.

• Each tree in the random forest independently predicts the target variable, and the final prediction is made by averaging the predictions of all trees.

• Random forest is robust to overfitting and noisy data, and it can handle large datasets...read more
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Q2. Bias variance trade off
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Basic quant and apt questions

Run a model of ML or Dl

Q1. Check your interpersonal skills
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Q1. SQL,Aptitude Questions
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Q2. Logical Questions,case studies
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Q1. Fundamentals of ML, classical ML
Ans. 
Fundamentals of classical machine learning
• Classical machine learning involves algorithms that learn from data and make predictions or decisions.

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

• Key concepts include training data, testing data, model evaluation, and hyperparameter tuning.

• Classical ML is often used for tasks like classification, regression, clus
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Q1. Research paper discussion
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Q1. Tableau Top 100 Question
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Q1. Tableau and SQL related questions.
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Q1. Salary Discussion and how early u can join that kind of question.
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Hacker rank coding questions

Q1. Python list dictionary
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Q2. Projects related questions which I have done earlier
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Q1. Why you want to join
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Q2. About my projects
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Simple SQL knowledge test contained questions with options

Q1. Writing SQL queries mostly based on joins, subquery, window functions. Difficulty level was intermediate
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Q1. Final round was with the hiring Manager. He/She will test your behavioural skills and whether you are fit for this role.
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Puzzlee on three bulb, switched off, tell which one

Q1. Puzzle - rope burn and length
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Q2. Strength and weakness
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