Mindshare Data Scientist Interview Questions, Process, and Tips

Q1. Build a MMX Model for the dataset given and share the insights
Ans. 
Build a MMX Model for a given dataset and share insights
• Preprocess the data by handling missing values and encoding categorical variables

• Split the data into training and testing sets

• Build the MMX model using appropriate algorithms like decision trees or random forests

• Evaluate the model using metrics like accuracy, precision, recall, and F1 score

• Interpret the model results to gain insights and make data-driven decisions
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Q2. How to evaluate Time series analysis
Ans. 
Time series analysis can be evaluated by examining the accuracy of forecasts, the model's ability to capture trends and patterns, and the overall performance metrics.
• Evaluate forecast accuracy using metrics like Mean Absolute Error (MAE) or Root Mean Squared Error (RMSE)

• Assess the model's ability to capture trends and patterns by visualizing the data and comparing it to the model's predictions

• Analyze the overall perfor...read more
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Q1. Tell me about your projects
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Q2. Tell me yourself
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Q1. What are SQL Joins?
Ans. 
SQL Joins are used to combine rows from two or more tables based on a related column between them.
• SQL Joins are used to retrieve data from multiple tables based on a related column between them.

• Common types of SQL Joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column;
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Q2. Different functions in Python numpy
Ans. 
Python numpy provides various functions for numerical operations on arrays.
• numpy.sum() - calculates the sum of array elements

• numpy.mean() - calculates the mean of array elements

• numpy.max() - returns the maximum value in an array

• numpy.min() - returns the minimum value in an array

• numpy.std() - calculates the standard deviation of array elements
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Q1. Details on the projects you have worked
Ans. 
I have worked on various projects including web development, data analysis, and software testing.
• Web development: Created a responsive website using HTML, CSS, and JavaScript.

• Data analysis: Analyzed customer data to identify trends and make recommendations for marketing strategies.

• Software testing: Conducted thorough testing of a mobile application to ensure functionality and usability.

• Project management: Led a team of...read more
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Q1. How to handle the project, explain stepwise
Ans. 
To handle a project, follow these steps
• Define project goals and objectives

• Create a project plan with tasks, timelines, and resources

• Assign tasks to team members and set deadlines

• Monitor progress and make necessary adjustments

• Communicate regularly with stakeholders

• Manage risks and resolve issues

• Test and evaluate project deliverables

• Complete the project and conduct a post-project review
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They gave me case study in interview based on that I had provide the solution.

Q1. They asked question regarding SQL, statistics and some project related questions
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Q1. Talk about yourself
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Q2. What is your professional experience
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Simple SQL questions

Create charts, Excel formulas

Q1. Background and communication
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Q2. Tell me about youe self
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Q1. About myself & my work experience
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Q1. SQL & Python related Qs
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