Power BI Masterclass - Tracking Open Customer Issues with Power BI DAX

The video tutorial explains how to track customer complaints using a running total in Power BI. It begins with importing data from an Excel file, followed by creating helper columns like custom and index columns. The tutorial then demonstrates how to visualize data and calculate running totals using these columns. Finally, it covers creating a DAX formula to compute running totals, emphasizing the use of the index column for cumulative calculations.

What is the primary purpose of creating a running total in the context of customer complaints?

• To determine the geographical distribution of complaints.

• To track the total number of complaints received over time.

• To identify the most frequent complaint type.

• To calculate the average resolution time for complaints.

Why is the index column used as a helper column in Power BI?

• To group data by category.

• To filter data by date.

• To assist in calculating running totals.

• To sort the data alphabetically.

What is the first step in transforming data in Power BI for this tutorial?

• Creating a new table.

• Adding a custom column for differences.

• Filtering data by date range.

• Importing data from a CSV file.

How do you calculate the difference between open and closed cases in Power BI?

• By using a built-in Power BI function.

• By applying a filter on the dataset.

• By creating a custom column and subtracting closed cases from open cases.

• By using a pivot table.

What is the purpose of visualizing the index column in Power BI?

• To categorize data by type.

• To highlight the most recent data entry.

• To show the order of data entries for running total calculations.

• To display the total number of entries.

Which function is used in DAX to calculate the running total?

• FILTER

• CALCULATE

• AVERAGE

• SUM

What is the role of the 'ALL' function in the DAX formula for running totals?

• To calculate the average of all entries.

• To sort the data in ascending order.

• To remove external filters from the visual.

• To include all data entries in the calculation.