Tags: COUNTAX

Compute an average for the same day in the past 3 years

{ 4 Comments }

Assume a simple two column dataset with dates in column A and numbers in column B. The dates in column A are from January 1, 2013 to December 31, 2016 and numbers in column B are for the period January 1, 2013 to December 31, 2015 (there are no numbers for January 1, 2016 to […]

Read More →

Sales data modelling and interactive visualisations

{ 30 Comments }

Visualise Sales Data of a Non-Alcoholic Beverage Company with basic columnar information such as Date of Sale, Time of Sale, Brand, Stock Keeping Unit (SKU), State, City, Quantity sold, Unit Price and Salesman Code.  In this sales dataset, each line item represents one visit for one SKU.  If nothing is sold in a certain visit, then the SKU […]

Read More →

Data slicing and analysis with the Power Pivot

{ 0 Comments }

Visualise an MS Excel file with two worksheets: Employee headcount – a multi column dataset with information such as Employee code, Date of Joining, Age, Division, Department and Location.  Each row represents data for one employee.  The number of rows on this worksheet is approximately 700. Training Data – a multi column dataset with information […]

Read More →

Count unique values with conditions on large databases

{ 8 Comments }

Given a database of 50,000 rows, counting unique values with conditions using formulas would either adversely effect workbook performance or would not work in the first place at all. In this workbook, I have shown the technique to count unique values with conditions on a large database 1. Using PowerPivot – Will only work in […]

Read More →