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Data Analysis Using Power BI Tables

For Q 1. Refer all the tables. For Q 2. Refer Table 1 only.  Table 1: Sales OrderID OrderDate CustomerID Product Category Quantity Price O001 01-01-2026 C101 Laptop Electronics 2 50000 O002 05-01-2026 C102 Mouse Accessories 5 500 O003 10-01-2026 C101 Keyboard Accessories 3 1200 O004 15-01-2026 C103 Laptop Electronics 1 50000 O005 20-01-2026 C104 Monitor Electronics 2 15000 O006 25-01-2026 C102 Mouse Accessories 8 500 Table 2: Customers CustomerID CustomerName City Gender C101 Amit Patil Pune Male C102 Sneha Sharma Mumbai Female C103 Rahul Joshi Nanded Male C104 Priya More Pune Female Table 3: February Sales OrderID OrderDate CustomerID Product Category Quantity Price O007 02-02-2026 C103 Keyboard Accessories 2 1200 O008 08-02-2026 C104 Monitor Electronics 1 15000 O009 12-02-2026 C101 Mouse Accessories 4 500 O010 18-02-2026 C102 Laptop Electronics 1 50000
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Important Questions Of Data Visualization

  Important Questions  Define data visualization and explain its importance. Explain the role of data visualization in decision making. Describe the data visualization process in detail. Discuss the challenges and limitations of data visualization. Explain different types of data with examples. Explain visualization tools and their importance. Compare Excel, Tableau, Power BI, and Python. Explain Tableau or Power BI in detail with features, advantages, and uses. Explain data storytelling with narrative and context. Describe best practices for dashboard layout and interactivity. Explain the principles of good visualization design. Explain the importance and use of color in visualization. Describe different types of color usage in visualization. Explain key principles like clarity, accuracy, and simplicity in visualization with examples. Explain the importance of data modeling in visualization.
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UNIT III : Designing Effective Visualization

  UNIT III : Designing Effective Visualization 1.     Principles of Good Visualization Design Data visualization is the process of presenting data in graphical form such as charts, graphs, and maps. The goal of good visualization is to communicate information clearly, accurately, and efficiently .     Principles of Good Visualization Design 1. Clarity Definition: Clarity means the visualization should be simple and easy to understand. Key Points: Use clear titles and labels Keep design clean and simple Avoid unnecessary elements Example: A bar chart showing marks should clearly display subject names and values. 2. Accuracy Definition: Accuracy means representing data correctly without misleading the viewer. Key Points: Use correct scale and proportions Do not manipulate axes Show actual data values Example: If one value is twice another, the visual representation should refle...
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Practical Questions

 Practcal Exam Questions of Data Visualization using Power BI 1. Students Data, display subject and marks in Pie chart. Student Name Subject Marks Aditi Math 85 Aditi Science 78 Rahul Math 90 Rahul Science 88 Sneha Math 70 Sneha Science 75 2. Sales Data, Display Category and sales amount in Funnel chart. Product Category Sales Amount Pen Stationery 100 Pencil Stationery 80 Notebook Stationery 200 Chips Snacks 150 Biscuits Snacks 120 Juice Drinks 180 3. Import CSV data display sales and region in Stacked Column Chart. Product,Region,Sales,Quantity,Dat...
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