Lowe's Senior Data Analyst Interview Questions and Answers

Q1. Sql questions on joins, window functions etc
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Q2. Basic statistics questions on Central tendency
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Sql and python questions were asked

Q1. Why are you fit for the role?
Ans. 
I am fit for the role due to my extensive experience in data analysis, strong analytical skills, and ability to communicate insights effectively.
• Extensive experience in data analysis

• Strong analytical skills

• Ability to communicate insights effectively
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Q2. Explain a project where you used data analytics to solve a business problem
Ans. 
Implemented predictive analytics model to optimize inventory management for a retail company
• Identified key factors affecting inventory levels such as seasonality, promotions, and supplier lead times

• Utilized historical sales data to forecast demand and optimize inventory levels

• Developed a predictive analytics model using machine learning algorithms to predict future sales and recommend optimal inventory levels

• Implemente...read more
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Q1. What is your expected compensation?
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Q2. When can you relocate?
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MySQL basics,
Sorting,
group by,
pivot

Case studies basic to advanced MySQL.

Q1. 1. Basic SQL questions including aggregations, window functions etc. 2. Project & resume walkthrough
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1. Guesstimates - How many Nike shoes are sold in India

Q1. Generic HR questions - why I want to quit the current company? Why Nike?
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Q1. Introduce Yourself
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Q2. Your Day to Day responsibilities in current Job
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Q3. Difference between View & Temp Table? what is view in sql?
Ans. 
Views are virtual tables that display data from one or more tables, while temp tables are temporary tables that store data temporarily.
• Views are virtual tables created by a query, while temp tables are physical tables created in the database.

• Views do not store data themselves, but display data from underlying tables, while temp tables store data temporarily for a session or transaction.

• Views can be used for security pu...read more
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Q4. Sql window functions
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Q5. Sql 2 tables were given N was asked to write query.
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Q6. Filters in Tableau
Ans. 
Filters in Tableau allow users to narrow down data displayed in visualizations based on specific criteria.
• Filters can be applied to dimensions or measures in Tableau.

• Users can use filters to focus on specific subsets of data, such as a particular region or time period.

• Filters can be set up as dropdown menus, sliders, or checkboxes for user interaction.

• Example: Filtering sales data to show only results from the past yea
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Q7. Parameters in tableau
Ans. 
Parameters in Tableau allow users to control the values in a visualization without modifying the underlying data.
• Parameters can be used to filter data, change calculations, or modify the appearance of a visualization.

• They can be created by defining a parameter in Tableau and then using it in calculated fields or filters.

• Parameters can be set to different data types such as string, integer, float, date, etc.

• Users can in...read more
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Q8. Types of bar charts in tableau, what is stacked bar?
Ans. 
Types of bar charts in Tableau include standard bar, stacked bar, and side-by-side bar.
• Standard bar chart displays individual bars for each category

• Stacked bar chart shows the total value broken down into sub-categories

• Side-by-side bar chart compares multiple measures across categories

• Example: Stacked bar chart can be used to show sales by region, with each region broken down by product category
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Q9. Data blending Vs Joins in tableau
Ans. 
Data blending combines data from different sources in Tableau, while joins combine data from the same source.
• Data blending is used when data comes from different sources and cannot be joined directly.

• Joins are used when data comes from the same source and can be combined based on a common key.

• Data blending allows for more complex analysis by combining unrelated data sets.

• Joins are more efficient for combining related d...read more
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Q10. Coin tossed 2 times what's prob to get both heads? what if coin is biased.
Ans. 
The probability of getting both heads when a coin is tossed 2 times is 1/4. If the coin is biased, the probability may change.
• The probability of getting both heads in a fair coin toss is 1/4 (1/2 * 1/2).

• If the coin is biased, the probability of getting both heads may be different depending on the bias.

• For example, if the coin is biased towards heads with a probability of 0.6, the probability of getting both heads would
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Q11. Difference in tree map & heat Map in tableau
Ans. 
Tree map displays hierarchical data using nested rectangles, while heat map shows data values using color intensity.
• Tree map visualizes hierarchical data with nested rectangles, where the size of each rectangle represents a measure.

• Heat map displays data values using color intensity, with darker colors indicating higher values.

• Tree map is useful for showing proportions within a whole, while heat map is effective for id...read more
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Present the case study through PPT which you already prepared before round 1. Hr reached out to me to complete case study before round 1.

Q1. Managerial Round (Technical)
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Q1. What interest you in analytics
Ans. 
I am fascinated by the ability of analytics to uncover insights and drive informed decision-making.
• I enjoy the challenge of working with large datasets and finding patterns within them

• I am passionate about using data to solve complex problems and improve processes

• I find it rewarding to see the impact of data-driven decisions on business outcomes
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Q2. Which tool you used for your project
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Q1. How do you upskill yourself
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SQL - 3 set of sql questions

1 Design Question, do ER diagram, 1 JSON parsing question

Q1. Mandate to be on-site
Ans. 
Being on-site is essential for effective collaboration, communication, and access to necessary resources.
• On-site presence allows for real-time collaboration with team members and stakeholders.

• Face-to-face communication can help clarify requirements and expectations more effectively.

• Access to physical resources such as servers or data centers may be necessary for certain tasks.

• Being on-site can also facilitate quicker d...read more
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Q1. Salary question expectations were asked
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Q2. Timeline question to join and move to required state
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