Tags: TOPN

Determine the lowest bidding vendor(s) for each product in a Pivot Table

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Imagine a dataset like this.  This dataset shows vendors that submitted proposals for supplying various parts to a Company.  There is one column for each of the twelve months.

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Via a simple Pivot Table, one can determine the lowest bidding vendor per product (part) for any chosen month.  However, one may also want to know the names of those vendors for each product (as seen in column G below).  Notice, that Vendor 2 and Vendor 3 submitted the lowest bid for Product 1 and therefore both names should appear in the result.

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I have solved this problem using PowerPivot and Power Query a.k.a. Data > Get & Transform in Excel 2016.  You may download my solution workbook from here.

Story telling with Excel Power BI

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With Power Business Intelligence (BI) tools of Excel 2013, one can metamorphose raw data and/or results of complex calculations into stunning and interactive visualizations.  Power View (one of the four components of Power BI) allows one to create a PPT like flow in Excel thus allowing one to weave a story.  To be able to interact with/create visualizations, you will need to install Microsoft Office Professional Plus 2013 (this version will already have two of the four components of Power BI - PowerPivot and Power View).  Additionally, you will have to install the following add-ins from Microsoft (the other two components of Power BI)

1. Power Query; and
2. Power Map

I have tried to showcase the prowess of Power BI tools of Excel 2013 in these two workbooks:

1. An overview of the BRIC Economies
2. Sales data analysis

You may watch a video of my work at this link

Perform an iterative sum of Top n values across multiple columns

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A tournament has 18 participating teams with 25 players in each team.  Each team has to play five rounds of the Tournament and not all players play all rounds.  Scores earned by each player in each round are shown in individual cells.  If a player does not play a round, that cell is left empty.

The task is to sum the highest 18 scoring players for each round.  Only the highest 18 players per team count towards the teams score.  If few of the players have the same score at position 18 then only one of them should be included in the overall score.

One solution is to sort each round of scores for each team in descending order and sum the highest 18 values.  This is obviously a time consuming process.

There could be two others ways to solve this problem

Formula driven solution - This uses a spare column, a lengthy formula and the Data > Table functionality.  Since Data > Table is a series of array formula, this solution makes the workbook very sluggish.  You may refer to my solution in this workbook.

PowerPivot solution - This solution is far better than the formula driven one in as much as no spare columns, lengthy formulas or Data > Tables have been used.  The solution in this workbook adds the scores of the highest 18 scoring players per round (If few of the players have the same score at position 18 then all scores are included in the overall score).  To use this PowerPivot solution, you need to be using the PowerPivot add-in for MS Excel.  This add-in is only available for Excel 2010 and higher versions.

Sum highest n numbers based on conditions

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Assume a two column database with names in column A and numbers in column B.  Names in column A may be repeated.  If a user types a certain name in a cell, a formula should sum the highest three values from column B for that name.

Depending upon the version of MS Excel which you are using, there could be two ways to solve this problem

Solution for MS Excel 2010 and higher versions

If you are using the PowerPivot add-in, then a simple DAX formula can solve this problem.

Solution for all versions of MS Excel

While this solution works for all versions of MS Excel, it uses an array formula (Ctrl+Shift+Enter).  Array formulas, if used extensively in the workbook, adversely effect the system's performance.

You may refer to my solution in this workbook.