KPMG India Senior Data Analyst Interview Questions and Answers

Q1. Questions on PowerBI & Power Query
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Q1. Interpersonal communication skills
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Q1. How many type of conections are available in Power BI?
Ans. 
There are four types of connections available in Power BI.
• Power BI Desktop Connection

• Power BI Service Connection

• Power BI Mobile Connection

• Power BI Gateway Connection
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Q2. What is incremental refresh in Power BI?
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Incremental refresh is a feature in Power BI that allows you to refresh only a portion of your data instead of the entire dataset.
• Incremental refresh is useful for large datasets that take a long time to refresh.

• It allows you to refresh only the new or updated data since the last refresh.

• You can set up incremental refresh by defining a range of values for a column that represents the refresh window.

• For example, you can...read more
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Q3. Diffrence between direct connection and live connection?
Ans. 
Direct connection is a static connection to a data source, while live connection is a dynamic connection that updates in real-time.
• Direct connection requires data to be imported into the analysis tool, while live connection accesses data directly from the source.

• Live connection allows for real-time updates and analysis, while direct connection requires manual refreshing.

• Direct connection is useful for small datasets or...read more
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Q4. Where power pivot is available in Power bi?
Ans. 
Power Pivot is available in Power BI Desktop and Power BI Service.
• Power Pivot is a data modeling tool in Excel that allows you to create relationships between tables and perform complex calculations.

• In Power BI Desktop, you can access Power Pivot by going to the 'Data' tab and selecting 'Manage Relationships'.

• In Power BI Service, you can access Power Pivot by going to the 'Settings' menu and selecting 'Data Sources'.

• Po...read more
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Q5. Use of SELECTEDVALUE() fax function?
Ans. 
SELECTEDVALUE() is a DAX function used to return the value of a column if it has only one distinct value.
• Used in Power BI to retrieve the value of a column if it has only one distinct value

• Returns an error if the column has more than one distinct value

• Can be used in combination with IF statement to handle errors

• Example: SELECTEDVALUE('Table'[Column], 'No value found')

• Example: IF(ISBLANK(SELECTEDVALUE('Table'[Column])),...read more
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Q6. How can we create a dependent slicer in Power bi?
Ans. 
Dependent slicer in Power BI allows filtering of data based on selection in another slicer.
• Create two slicers, one for the main category and another for the sub-category.

• Add the main category slicer to the report page and select the sub-category slicer.

• Go to the Format pane and select the 'Edit interactions' option.

• Choose the 'Filter' option for the sub-category slicer.

• Now, when a main category is selected, the sub-cat...read more
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Q7. How many type of filters are available in Power bi?
Ans. 
There are three types of filters available in Power BI.
• Visual level filters

• Page level filters

• Report level filters
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Q8. How can we share a power bi report with an external user?
Ans. 
To share a Power BI report with an external user, we can use the Publish to Web feature or share it via email.
• Use the Publish to Web feature to generate an embed code that can be shared with external users

• Ensure that the report contains only non-sensitive data before using the Publish to Web feature

• Alternatively, share the report via email by granting access to the external user's email address

• The external user must ha
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Set of questions on english , aptitude , all are at easy level

Sql basics and some query questions

Q1. Why do u want to join zs ; what do u know about zs; where do u see urself after 5 years ; question on real life scenarios ;
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Q2. Question on real life scenarios
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Q1. Salary expectation
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Q2. When can u join
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Q1. Explain all types of joins
Ans. 
Different types of joins in SQL are inner join, left join, right join, and full outer join.
• Inner join: Returns rows when there is a match in both tables

• Left join: Returns all rows from the left table and the matched rows from the right table

• Right join: Returns all rows from the right table and the matched rows from the left table

• Full outer join: Returns rows when there is a match in either table
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Q2. Difference between having and where
Ans. 
The main difference between 'having' and 'where' in SQL is that 'having' is used with aggregate functions to filter groups, while 'where' is used to filter rows.
• HAVING is used with GROUP BY to filter groups based on aggregate functions results

• WHERE is used to filter rows based on conditions

• HAVING is applied after GROUP BY, while WHERE is applied before GROUP BY

• Example: SELECT department, AVG(salary) FROM employees GROU...read more
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Three sections are there 1) Aptitude Test 2) SQL 3) DSA

Q1. What is DSA , sorting , difference between array and linked list
Ans. 
DSA stands for Data Structures and Algorithms. Sorting is the process of arranging data in a particular order. Array is a data structure that stores elements of the same data type in contiguous memory locations, while linked list is a data structure that stores elements in nodes with pointers to the next node.
• DSA stands for Data Structures and Algorithms

• Sorting is the process of arranging data in a particular order

• Arra...read more
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Q2. Written a SQL query
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Q1. Coding question like add numbers
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Q2. Experience on your project
Ans. 
I have experience working on various data analysis projects, including market research, customer segmentation, and predictive modeling.
• Developed predictive models to forecast customer behavior and optimize marketing strategies

• Conducted market research to identify trends and opportunities for growth

• Performed customer segmentation analysis to target specific demographics with personalized marketing campaigns
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Q1. Power BI Difference between ALL() and ALLSELECTED()
Ans. 
ALL() ignores all filters in the query context, while ALLSELECTED() ignores only filters on columns in the visual.
• ALL() removes all filters from the specified column or table.

• ALLSELECTED() removes filters from the specified column or table, but keeps filters on other columns in the visual.

• Example: ALL('Table') would remove all filters on the 'Table' in the query context.

• Example: ALLSELECTED('Column') would remove filte...read more
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Q2. Excel Difference between COUNT() and COUNTA()
Ans. 
COUNT() counts only numeric values, while COUNTA() counts all non-empty cells.
• COUNT() counts only cells with numerical values.

• COUNTA() counts all non-empty cells, including text and errors.

• Example: COUNT(A1:A5) will count only cells with numbers, while COUNTA(A1:A5) will count all non-empty cells.
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Q1. Resume based questions like explain the projects that you have done.
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Q2. Sample dataset questions
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Q1. Basics of power bi and sql
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Q2. What are joins and types of join
Ans. 
Joins are used to combine rows from two or more tables based on a related column between them.
• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the right table

• RIGHT JOIN returns all rows from the right table and the matched rows from the left table

• FULL JOIN...read more
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Q3. How to add date table in power bi
Ans. 
To add a date table in Power BI, you can create a new table with a list of dates and relationships with other tables.
• Create a new table in Power BI with a list of dates

• Add columns for day, month, year, etc. for additional analysis

• Establish relationships between the date table and other tables in the data model
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Q1. Sql scenario based question on joins
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Q2. Window function questions
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Q3. Performance tuning
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Q4. Power bi dax question
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Q1. How good are you with numbers
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Q1. Vlookup, pivot table, sumif, average, graphs
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Q1. Do you know the role and responsibility of this position
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