Section 9: Handling Errors in Formulas
- Error types (#N/A, #REF!, #VALUE!, #DIV/0!, #NAME?) and the ISNA and IFERROR functions
- Cautions when IFERROR can hide the real problem, and Formula Auditing tools (Trace Precedents/Dependents)
- Workshop: inspect and fix a sample report with several errors and identify the root cause
Section 10: Conditional Formatting
- How it works and rule priority, using Data Bars, Color Scales and Icon Sets
- Writing rules with formulas and managing them with Manage Rules, resolving overlapping rules
- Workshop: a profit/loss Data Bar, icons for stock below the reorder level, and highlighting late shipments
Section 11: Preventing Errors with Data Validation
- Preventing invalid input, setting alert messages and custom validation with formulas
- Creating dropdown lists from lists and ranges, and checking with Circle Invalid Data
- Workshop: prevent duplicate entries, prevent invalid entries, and build a dynamic dropdown list (choose a brand and the model list changes)
Section 12: Working with Data in Excel and Using Tables
- An overview of data tools (Table, Power Query, PivotTable, PivotChart) and choosing the right one
- Creating a Table, calculating with structured references, removing duplicates and adding a Slicer
- Workshop: convert product and customer data into Tables for further analysis and summary
Section 13: Power Query for Data Preparation
- What Power Query is, the basic ETL concept, the Power Query Editor and Applied Steps
- Importing from multiple Excel files, CSV and folders, cleaning data, unpivoting, merging with Append/Merge and refreshing
- Workshop: import same-structure Excel files from a whole folder, merge them automatically and refresh in one click
Section 14: Analysis and Summary with PivotTable and PivotChart
- Preparing data and building a PivotTable, arranging fields, changing Summarize Values By and Show Values As (percentage, growth)
- Grouping by date, month, quarter and numeric ranges, creating Calculated Fields, and building PivotCharts with Slicers and Timelines
- Workshop: build an interactive sales report from Power Query-prepared data with Slicers and Timelines
Section 15: Presentation and Chart Customization
- Choosing the right chart type for your message and customizing axes, labels, legends and gridlines
- Formatting numbers with format codes (millions as M, thousands as K), building Combo Charts and Sparklines
- Workshop: polish a monthly sales chart for an executive presentation and add Sparklines to the summary table
Section 16: File Security
- Setting file passwords (Password to Open and Password to Modify) and protecting the worksheet and workbook
- Preventing formula visibility and cell edits (Lock and Hidden) and allowing edits only in certain ranges (Allow Edit Ranges)
- Workshop: build a data-entry form where users can only fill designated cells, cannot see formulas, and the structure is password-protected
Section 17: Capstone Workshop
- Brief: build a complete monthly sales summary report from several raw data files, preparing and merging data with Power Query so it refreshes automatically
- Build the calculation layer with the formulas learned (SUMIFS, XLOOKUP, FILTER, GROUPBY), summarize with a PivotTable and Slicer, customize the chart, and apply Conditional Formatting and Data Validation
- Protect the file and hide formulas before handoff, with guidance on advancing to advanced Power Query, advanced PivotTable, Macro/VBA and Power BI