A Technique for Analysing Large Tables of Data

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Once you start using Excel to develop systems, budget, forecast and large tables of data you may come across the dilemma of “How do I know this is right” or “How do I truth check this”.

This post, Huis second, will add a tool to your arsenal to help you out.

The technique below allows for the rapid visual evaluation of 12 or more days/months/years of data via a chart of 2 variables and the ratio between them, utilising 2 sliders to rapidly change input variables.

DATA

Typically all businesses deal in 3 types of numbers, ie: Dates or Times, Physicals and Dollars.

Dates may include Times, Days, Weeks, Months, Years or any periods in between

Physicals directly relate to the business you are in but may include inputs and or outputs: eg: metal, tyres and cars, sugar, flour and cakes or whatever your business makes, strangely Physicals may also include Dollars, if you’re in the financial services sector. People are a Physical.

And Dollars which could be revenue, costs, cashflows or profit types of numbers.

I have found one of the best methods of looking at large tables of data is to look at a key input or output physical and then interactively scroll through the cost or income and calculate a ratio between the two.

I am going to use as an example a budget which has 40 rows of data including Physicals and Costs. But you will see that the techniques here can easily be extended to hundreds of rows. You can download this file here: Bobs Homes

The technique below allows rapid visual evaluation of 12 or more months data a chart of 2 variables and the ratio between them.

Using 2 sliders the user can rapidly move between variables and evaluate the variance over a given time frame against another variable.

The technique involves the charting of 3 ranges which in turn will be controlled by 2 sliders.

The first Range and slider will allow the selection of a Physical.

The second Range and slider will allow the selection of the Cost/Income component.

The third range will be the ratio of these, but specifically cost or income per physical.

I have attached a workbook, Bobs Homes, which contains 2 models, an example model for you to practice the following techniques on and a completed model which you can examine and pull apart to see how it works.

Bobs Homes

Load the model and scroll around and see what data is available. You will notice a time scale across the top with Physicals and Dollars down the left side. The Physicals and Dollars are grouped into common areas like inputs, outputs and costs, income and profit.

You will also note that there are 10 blank rows at the top of the worksheet. I do this so that I can perform simple calculations, charts or other workings without upsetting the data and other calculations below and for macro’s which automatically find the bottom of the data I know there is nothing below my data to upset the calculations.

Let’s jump in

SETUP

We’re going to add the following components

Headings

A2: Physical

A3: Cost/Revenue

A4: Ratio

E1: =E12

and copy across to Q1

Data

C2: 1

C3: 1

D2: =CONCATENATE(OFFSET(B$13,$C$2,0),OFFSET(C$13,$C$2,0))

D3: =CONCATENATE(OFFSET(B$22,$C$3,0),OFFSET(C$22,$C$3,0))

D4: =CONCATENATE(D3,”/”,D2)

E2: =OFFSET(E$13,$C$2,0)

E3: =OFFSET(E$22,$C$3,0)/1000

Copy E2:E4 across to Q2:Q4

Chart

Select Area D1:Q4

Insert Chart, Line Chart with or without markers to your liking

Suggestion – Place the Chart between the Data and the new Headings and formulas you have just added

Adjust the Legend to be at the Bottom of the chart

Sliders

Insert 2 Sliders

Developer Tab, Insert Scroll Bar (Form Control)

If you don’t have the Developer Tab, Have a read of: http://chandoo.org/wp/2009/05/26/excel-2007-productivity-tips/

Position the scroll bars so they are vertically next to the Chart, Use Alt whilst dragging to snap to Cell corners or edges

Link the sliders to the lookup cells

Slider 1
Current value: 1
Minimum: 1
Maximum: 7 (This is the number of Rows of Physicals data)
Incremental Change: 1
Page Change: 0
Cell Link: $C$2

Slider 2
Current value: 1
Minimum: 1
Maximum: 19  (This is the number of Rows of Cost/Revenue data)
Incremental Change: 1
Page Change: 0 (set this to maybe 10 if you have more than 30/40 rows)
Cell Link: $C$3

FINAL MODEL

You can now select a Physical by dragging the Left Scroll bar

You can now select a Revenue/Cost by dragging the Right Scroll bar

The Ratio of Cost/Revenue to the Physical is calculated and the 3 are all charted

Examine the model and see what variances in inputs/outputs can be seen.

HOW DOES THIS WORK?

The Formula in E2:Q3, are extracting the physicals and Cost/revenue data from the main body of the report by simply using an Offset function from the top of the Physicals and Cost/Revenue area.

The Distance they offset is retrieved from the control Cells C2:C3

The labels for the Physicals and Costs/Revenues are also retrieved using 2 Offsets inside a Concatenate. This is done to allow Heading Rows and Sub Headings to be displayed and joined if available from 2 separate columns.

The Chart is a simple Line Chart which is charting the 3 Data Rows (E2:Q4) against the Time Period (E1:Q1) at the top of the work area.

You can customise the chart to your content.

The 2 sliders control the control Cells C2:C3, and allow for interactive selection of Physicals and costs.

In use often you will find that one of the Physicals, Costs/Revenue or Ratio is generally much smaller in scale than the other 2 measures. Generally it is a good idea to plot the odd scale against a secondary Y axis.

Select the series line, Right Click and select Format Data Series

FUNCTIONS USED:

Offset: http://chandoo.org/wp/2008/11/19/vlookup-match-and-offset-explained-in-plain-english-spreadcheats/

Concatenate: http://chandoo.org/excel-formulas/concatenate.html

How do you truth check your data? Let us all know in the comments below:

How are you finding the content level of my posts? Let me know in the comments below:

Next Thursday – Selecting Individual Data Points in Charts and More Sliders

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28 Responses to “Team To Do Lists – Project Tracking Tools using Excel [Part 2 of 6]”

  1. [...] & tracking a project plan using Gantt Charts Team To Do Lists - Project Tracking Tools Part 3: Preparing a project time line [upcoming] Part 4: Time sheets and Resource management [...]

    • Jacobus says:

      the templates are great (I bought the combo).
      What I'm missing is a way to have the project gantt chart and reporting with the data per resource, in such a way that I can also show the occupation per resource on an extended gantt chart.

      So with hours entered per person per project or sub-activity, to show a gantt chart of how many hours/days a person spent on which project (or plans to spend).

  2. [...] from: Team To Do Lists - Project Tracking Tools using Excel [Part 2 of 6] 25 Jun 09 | [...]

  3. ross says:

    Hi Chandoo,

    Funny I have a post on the value of MS project lined up which I will post when the current monster project I'm working on finishes and I get some free time!

    I'm not sure this would help with any of the projects I've worked on, closing down a to do list seems like more effort than it's worth, but it might be useful for some things. I guessing it doesn't, but does the time stamp not update when you recalculate the work book?

    keep up the good work!
    Ross

  4. Chandoo says:

    @Ross.. Thanks for sharing your ideas... I think to do lists are a great way to keep up with project activities and ensure accountability from individual team members, when they are implemented right.

    "I guessing it doesn’t, but does the time stamp not update when you recalculate the work book?"

    Your guess is right. When you change the calculation mode to "iterative", excel takes care of the nittygritties and retains older values in circular references in formulas.

  5. [...] Project Management in Excel [New Series] - Gantt Charts | To Do Lists [...]

  6. [...] & tracking a project plan using Gantt Charts Team To Do Lists - Project Tracking Tools Project Status Reporting - Create a Timeline to display milestones Part 4: Time sheets and Resource [...]

  7. Tam says:

    Hi Chandoo,
    The template give me lot of convenience to monitor the thing to do. It simple. Thank You

  8. [...] & tracking a project plan using Gantt Charts Team To Do Lists - Project Tracking Tools Project Status Reporting - Create a Timeline to display milestones Part 4: Time sheets and Resource [...]

  9. [...] make sure you have read the first 4 parts of the series - Making gantt charts [project planning], team todo lists [project tracking], project time lines chart [reporting] and Timesheets and Resource Management using Excel. Also [...]

  10. Brian says:

    Chandoo,

    I really do not see any befit to this function in Excel unless it was somehow tied into some other chart. That is say a scheduled activities % complete is based on the to-do list.

    The only way this chart would be useful is if no one was assigned none dependent task that could be done by anyone. The cases were both of these conditions are true are so few and far between it really makes this chart worthless.

  11. Chandoo says:

    @Brian... Once you have a todo list up and running, it is easy to get metrics out of it. I didnt propose it as it might look a bit too micro-management-ish.

    I am able to understand what you meant by "The only way this chart would be useful is if no one was assigned none dependent task that could be done by anyone. The cases were both of these conditions are true are so few and far between it really makes this chart worthless."

    Can you explain?

  12. Brian says:

    "Chandoo"

    What I mean is this. Lets say you have 10 task which are part of one activity/WBS that is in your schedule. One there are very few cases were many people would be assigned to complete this one scheduled activity with no direction being given who should what of the 10 task. It is poor management, and the task 90% of the time would not get done in a timely manner if say 4 people were responsible. Secondly, you are assuming all 10 task are independent of each other. You might need to do task 1 thru 3 before you can do task 4, and to do task 7 you might need to do 4 and 6. Thirdly, the time it would take to compile and then fill out the to-do-list even in limited applications is really not worth it.
    I just see almost no applications why a team would need to inform others separate from the schedule that they have completed a task on a to-do list unless anyone of the 4 people could of completed that task.

    My point is, there might be a few very limited applications for this type of list but this list would be worthless as a Project Management tool in every other case.

    However, change this from a to-do-list to a document change log and it is perfect. Instead of to-do it is the documents name or summary of what changed in the document. The person is who edited the document, and the time stamp is when they checked it in. But I do not know why you would use excel when there is free software you can use commercially that is 10 times better that does document management.

    I think using excel to do Project Management over a real Project Management application is a bad idea. Unless you are running a very small, simple project, the time and effort is a lot more to use excel compared to the cost of the Project Management software.

    This comes back to my point, I love your site, however, just because you can do something in excel does not mean you should do it. To often the time it takes to use excel is wasted 10 times over from the cost of doing it in an application designed to for the specific application.

  13. Chandoo says:

    @Brian: The todo list mentioned here is meant to keep track of all the tasks for which detailed planning is not necessary but some sort of tracking is needed. These are not be confused with project activities (a la gantt chart).

    I like your suggestion about using this as a document tracker. Pretty cool use.

    Coming to your point about excel as a real project management tool, well, I have my views, but in a serious project environment, it would surely payoff to have a dedicated project management application.

  14. [...] & tracking a project plan using Gantt Charts Team To Do Lists – Project Tracking Tools Project Status Reporting – Create a Timeline to display milestones Time sheets and Resource [...]

  15. Somnath says:

    Chandoo,

    Wonder how the timestamp column will maintain its previous data. Both Today() and Now() functions will update as and when the next timestamp happens.

  16. [...] Preparing & tracking a project plan using Gantt Charts Part2: Team To Do Lists – Project Tracking Tools Part3: Project Status Reporting – Create a Timeline to display milestones Part4: Time sheets and [...]

  17. Tate says:

    I've combined this with the issue tracker since I like the automatic date stamp, but one thing I'm noticing is that I can't replicate the chart that goes along with the issue tracker because the cells that are referenced have the formula that inserts the time stamp instead of a the actual date value. All the dates of the last 30 days display 0 when they should have a value.

    Is there a way around this?

  18. Mitch says:

    I have edited the chart so that my team members can update the percentage completion of the assigned tasks. When the cell is updated, i would like the time stamp to update. How would I manipulate the formula to update whenever the drop-down list is changed?

  19. Excel is great however sometimes you need to get a better idea of what tasks each person on your team is working on at any given time. We've developed a web app that can do just that! Each person has a list of tasks, listed in the order they have to complete them.

  20. Yukti Kumar says:

    HII,

    I want to expand the database through excel where i am working on 11 cities as of now and i want to expand it upto 50 cities and hence forth the data related to it will also expand so i want to make it precise where i can get updates also that this work is required to be done at that particular day or date

  21. BudB says:

    Thanks for making all of this information available for free. I am currently using excel to track everything for the first time. I later plan to output our information here with a more visual presentation. Wish me luck!

  22. Learner says:

    Can some one point me out to some additional direction on the "Who Finished it?" column? Something more 'basic' for a newbie excel guy? lol I got everything else working on this tutorial but that column. I can't seem to recreate it and I know a lot of it is due to lack of knowledge with VB code. I'd like to recreate this column very much 🙁

  23. Nishad says:

    Dear Chandoo,
    Thanks for the team to do list, kindly let me know how to set the column who " finished it " from another work sheet

  24. Srihari says:

    Hi Chandoo,

    Unable to download it - can you please check the link and confirm.

  25. Aryona says:

    Great inhisgt! That's the answer we've been looking for.

  26. Tushar Kacha says:

    Hi Team,

    I know u all are the best programmers in the world!!! that's I am here to rectify my issues. here is my question please ans me as soon as possible before 8-3-2017 its really urgent.

    I have a project named the production tracker.

    1) I require the user form which shows the names of the Associates which are linked to the different tracks. when the user is selected the particular track related details and dropdowns should appear.

    2) I need to track the associate needs how much of the time to complete the particular task. with start stop and pause and resume timer.

    3) It should display the daily count of the production and save the data to the another Excel file.

    this production tracker should save all the data no matter how many people logs in into it.

    Please help me for this it will be very appreciated.

    you can directly email me on my mail ID: tusharkch694@gmail.com

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