Power BI Masterclass - Learning DAX: Dynamic Calculation of Sales for the Last X Days

This video tutorial demonstrates how to implement dynamic parameters in Power BI reports. It covers creating a parameter, using it in formulas, and calculating the last sales date with DAX functions. The tutorial also explains how to build and evaluate a final expression to visualize sales data dynamically.

What is the primary focus of the initial section of the video?

• Implementing parameters in Power BI reports

• Creating a new Power BI dashboard

• Analyzing customer feedback

• Developing a marketing strategy

What is the purpose of creating a dynamic parameter in Power BI?

• To change the color scheme of the report

• To filter sales data by a specific number of days

• To add new customers to the database

• To export data to Excel

Which option is NOT part of setting up a parameter in Power BI?

• Naming the parameter

• Setting minimum and maximum values

• Creating a slicer

• Designing a new logo

Which DAX function is used to calculate the last sales date?

• LASTDATE

• AVERAGE

• COUNT

• SUM

What is the role of the 'ALL' function in the context of this video?

• To apply a filter to the data

• To remove any existing filters

• To calculate the sum of sales

• To create a new table

How does the parameter affect the data visualization in Power BI?

• It modifies the data context to show sales for a specific period

• It adds new data fields to the report

• It exports the report to a PDF

• It changes the color of the charts

What happens when the slider is adjusted to a smaller value?

• Fewer sales data is displayed

• More sales data is displayed

• The report is deleted

• The report is exported

What does an empty value in the sales data indicate?

• The customer has not ordered anything in the specified period

• The customer is new

• The data is corrupted

• The report is incomplete

What is the effect of increasing the number of days in the parameter?

• The report becomes less detailed

• The data is reset

• More sales data is included

• The report is archived

What is the final outcome of using the slider parameter in Power BI?

• It sends notifications to customers

• It allows dynamic visualization of sales data

• It creates a new database

• It deletes old sales records