One of the most dreaded courses during my under-graduation is Probability, Statistics & Queuing Theory. We called it PSQT. I struggled to understand the significance and concept of this course as I could barely concentrate in the class. We had a professor, who is probably a genius, but the moment he started the class, I would magically fall in to one of my after-noon naps. When I woke up, we are either in the middle of an elaborate t-test or going thru intricacies of a Markovian queue.
This was all 11 years ago. Later in life, I have embraced the world of probability & statistics. I still fear queues. May be I will get there one day. 😉
A good understanding of statistics & probability theory is necessary if you want to model complex real-life problems using Excel or similar tools. Naturally, Excel has several functions, features & supported add-ins to help you in this area.
Today, I want to share some of this with you. This article is broken down in to 3 parts.
- Learning Statistics & Probability using Excel
- Downloadable Excel Workbooks to understand
- Full blown models & simulations in Excel
#1 – Learning Statistics & Probability Concepts using Excel
Using Excel RAND functions
Excel has several powerful functions (formulas) to generate random numbers, random data. You can combine these functions to generate data that has certain parameters – like a give mean, standard deviation or follows a certain type of distribution.
Go thru Using Excel’s Random Functions for a detailed overview these techniques.
Simulating Dice Throws in Excel
One of the fundamental ways to learn about Probability is to look at dice throws. A dice has 6 faces and on each throw, any of the 6 faces turning up is equally likely. So, we say, each face has 1/6th probability of showing up. If you want to simulate this in Excel, you can use the formula RANDBETWEEN like this, =RANDBETWEEN(1,6). On each run, this formula would throw up a random number between 1 & 6 (including both).
For more, Simulating Dice Throws in Excel
Shuffling a List of Values in Excel
Understanding permutations and combinations is essential when it comes to modeling many real-world problems. Using Excel’s RAND, VLOOKUP and SMALL formulas we can generate a random permutation of a given list of values (in other words – we can shuffle the list).
To learn this read, Shuffling a list of values in Excel
Generate Frequency Distribution from Data
Often, when you are analyzing data, you need to understand how the data is distributed. Again, Excel has just the right function for this sort of thing. FREQUENCY(). In this simple tutorial, learn how to use Excel’s FREQUENCY formula to generate frequency distribution of given data.
Read Frequency Distributions in Excel
Trend Analysis & Forecasting using Excel
One of the most common applications of statistics is trend analysis & forecasting. Again, Excel shines with a lot of powerful formulas, built-in features and charting tools to help you understand the data & predict future based on that.
Since this is a big topic, we have covered it in 3 parts –
Part 1- Introduction to Trend Analysis & Forecasting: In this, we will learn what is trend analysis & forecasting. We will see manual forecasting technique in Excel. We will use Excel charts to depict our analysis and results.
Part 2 – Trend Analysis & Forecasting using Excel Functions
In this second part, we learn about Excel’s functions like LINEST, TREND, FORECAST, SLOPE, INTERCEPT, LOGEST and GROWTH. These powerful formulas can process lots of data and extract the trend information dynamically.
Part 3 – Trend Analysis & Forecasting using Charts & Macros
In the final part, we talk about how to use Excel chart’s trend analysis & forecasting features to estimate the trend & predict future values based on the data.
We also learn how to use Macros (VBA) to augment Excel chart’s trend-lines with useful information.
Visualizing Distribution of data with Box Plots
Box plots are an excellent way to understand the distribution of data. Unfortunately, there is no direct option to make a box plot from given data in Excel. That is where, this tutorial comes handy.
Learn how to create box plots in Excel.
#2 Downloadable Excel Workbooks
Learn Basic Statistics & Gaussian Distribution using this Excel Workbook
Glen, one of our long time readers shared this file with me. It lets you perform statistical analysis, quality control analysis, visualize Gaussian distribution based on the data you enter.
Click here to download the workbook.
Thanks Glen.
More Downloadable Workbooks
Almost all of the links in this page will take you to detailed articles on Chandoo.org, where you can also find downloadable workbook with examples. So just click thru and learn. 🙂
#3 Full blown models & simulations in Excel
A full blown model lets you learn various statistical concepts, Excel features and how to bring them all together to mimic a real-life situation.
Simulating Deal or No Deal game in Excel
In this simulation of Deal or No Deal, a popular television game, we use basic probability, permutations and Excel formulas features. You will learn how to assign random values to the suit-cases, how to use circular references, how to calculate the banker’s offer.
Simulation of Deal or No Deal game in Excel
Generating Housie / Bingo Tickets in Excel
Housie (Bingo) is a popular recreational game where the tickets contain 15 numbers between 1 to 90, arranged in 10 columns (3×10 grid). First column has numbers between 1 to 9, second column has 10 to 19 so on..
Generating a bingo ticket in Excel is a nice exercise in statistics, permutations and Excel formulas.
Learn from Bingo / Housie Tickets in Excel
Data Tables & Monte Carlo Simulations in Excel
Excel has powerful features to let us do complex simulations of real world situations. One such feature is called as data table.
The Data Table allows a set of what if questions to be posed and answered simply, and is useful in sensitivity analysis, variance analysis and even Monte Carlo (Stochastic) analysis of real life model within Excel.
The case of Blue Sky Mining Company
To help you learn about data tables, Monte Carlo simulations, we have put together a fictional mining company – Blue Sky co. and analyzed its performance under various assumptions & simulations.
To learn about this, visit Data Tables & Monte-Carlo Simulations page.
Modeling & Scheduling a FIFO (First In First Out) Queue in Excel
FIFO queues are very common in life. You can see them at Airports, coffee shops, Apple stores; Except at Airports it is FIFOUYC (FIFO Unless You are Crew).
In this article, we model & schedule a FIFO queue using Excel.
More Full Blown Models & Simulations in Excel
For more examples, check out these links.
- One more example of Data Table & Linest
- Simulating 3D dancing pendulums in Excel
- Simulating Monopoly Board Game in Excel
Do you use Statistical Concepts for your work?
As a small business owner, a good portion of my work involves statistical analysis, forecasting and simulation. I run estimates for our website traffic, revenues. I run statistical tests (split tests etc.) to optimize our sales pages, website. I estimate when my kids wake up from their nap (based on past experience) and plan my work accordingly. Thankfully, for the last part, I do not use Excel 😀
What about you? Do you use statistical concepts for your work? What are the things you use and how does Excel help you in that? What are your favorite formulas, features and tips? Please share using comments.
Special thanks to Hui & Glen
Many thanks to Hui, our resident Excel ninja for writing many of the articles on statistics, simulation, forecasting & trend analysis.
Special thanks to Glen for sharing the analyze-this file with us.
Say thanks to them if you enjoyed this.
28 Responses to “Pimp your comment boxes [because it is Friday]”
This borders on Excel soft-cell...er, soft-core...porn. My favorite kind.
Wow, that is pimp-TASTIC! I have a question, as a VBA n00b: additional comment boxes stay plain unless I "run" the macro. Is there a way to change all comments, going-forward?
hi Chandoo, well, I like the macro approach. For those who don't like it, there is another way: just add the "draw" toolbar to the shapes toolbar (via Custom etc), click on "edit comment", click on the auto-shape and then choose "draw" drop-down, --> modify auto-shape --> then you even can have a heart or a banner (I like the horizontal banner in in purple :-)) . in excel 2007, you have to add this custom menu that you choose via Excel Options --> Custom --> it is called "change/ modify auto-shape"!!!
best,
@Chandoo. Great Post 🙂
@Tim : the way the macro is coded, it must be run very time.
@Community: If someone has an idea to perform it when opening an existing excel, it should be nice.
@Community: if someone has some code to revamp the commentboxes on all sheets, please share it. 🙂
@Microsoft Excel-progammers: some pimpoptions for the commentboxes should be great.
Cheerio
Tom
For the auto run, please add the codes in workbook:
Private Sub Workbook_SheetActivate(ByVal Sh As Object)
Call Comments_Tom
End Sub
Wow, that was a lot of fun... Thanks Tom!
@Jeff... Now, 5000 people know about your favorite porn... 😛
@Tim ... you can write an event to handle the new comments. I wouldnt recommend it as it is really painful. another option is to use the macro suggested by Yukikomi. It will update comments everytime you activate the sheet.
@laguerriere: very cool 🙂
@Chandoo ... Thanks! This is good stuff. I combined your tip with a tip from Mark O'Brien, then assigned it to a button on Excel 2010's Quick Access Toolbar, to format comments AS I add them. I also like how Mark's code saves me the trouble of backspacing my name out of new comments:
Sub AppendToExistingComment()
'Source: Mark O'Brien at http://www.mrexcel.com/forum/showthread.php?t=57296
Dim oRange As Range
Dim oComment As Comment
Dim sText As String
'Use object variable to hold range.
Set oRange = ActiveCell
'Use object variable for comment
Set oComment = oRange.Comment
'text to be added to the comment box
sText = InputBox("Type text to be added:", "APPEND TO COMMENT TEXT")
If Len(sText) = 0 Then End
'If Active Cell has a comment then append new text to the end of the comment text
If Not oComment Is Nothing Then
sText = oComment.Text & vbNewLine & sText
oRange.Comment.Delete
End If
'Add a comment with the contents of sText
oRange.AddComment sText
DoEvents
Comments_Tom
End Sub
Thank you very much for the code, it seems to be working for the most part; I am having a problem however. Once the routine makes the corrections to the comment, the comment becomes invisible. By invisible, I mean that when I highlight my mouse over it, nothing appears. However, when I right click the cell and click 'edit comment' then the comment becomes visible and I enter edit mode. Upon clicking out of the comment, it simply vanishes again. I've tried to fix this problem by adding a .shape.visible = msoTrue but then every comment is always visible. o_O please advise...
Thank you,
Nick
@Nick- That is because the font color of the comment is white and when you select the color of selection is also white hence you can not see anything. Try to change the color code in the routine to something else. would work
Thanks for that! The code works perfectly!
[...] look at Format Excel Comment Boxes using VBA Macros | Chandoo.org - Learn Microsoft Excel Online [...]
@ Chandoo - code works great and the comments look super cool. But I have ran into a small issue. In the comments, I am inserting pictures. When I run the macro, for all comments which already have pictures; pictures are deleted. Pls help me retain the pics in comments.
[…] posted some code one of his readers submitted, it "pimps" your comment boxes from those boring black-text-on-yellow rectangles to something more professional and eye-pleasing. […]
love in it
Hi Tom,
This looks really excellent. I am however relatively new to macros / VBA codes so having copy pasted your code in the Developer mode of an Excel file, what are the next steps to use them? Can you please help? Just to recap, I opened a blank Excel workbook, clicked on Developer, copy pasted the comments code and saved the file to the desktop.
Now how do I go about using it to add comments to an existing file? My apologies for asking a question which may be basic to you great geniuses, but I am not there yet and aspire to get there.
Many thanks for helping me with next steps that I need to take so that I can now use the code.
Best Wishes
Deepak Dave, CMA, MBA, PMP
Senior Management Consultant
Dear Dave,
The best thing to do is to copy the macro in the personal.xls(x) file. The personal excel file will always be launched when you open excel so you can use it with every excelworkbook.
Read all about it on the page of Microsoft.
https://support.office.com/en-us/article/Copy-your-macros-to-a-Personal-Macro-Workbook-aa439b90-f836-4381-97f0-6e4c3f5ee566
Once you have the macro in the personal, you can 'call' the macro by the keyboardcombination 'alt+f8' and klik on the macroname.
Hope this clarifies the 'how to'. Good luck with your first steps in the wonderfull world of macro's.
Tom
Hi Tom,
Many thanks. I will try that out. Learning is fun and learning this stuff is even more amazing.
Best Wishes
Deepak Dave
There is a line 'Dim LArea As Long' which does not appear to be used. Have I missed something?
Dear Gary,
Correct the 'Dim LArea As Long' is indeed not relevant and can be deleted.
Tom
Excellent hack!
For some reason when I opened my file after using LibreOffice Calc, all comment boxes had changed to some arrow shape.
So this macro helped me from manually changing more than 5000 comments in a worksheet, or having to install some Excel extension.
I used it with the following attributes to get back old style comments:
It helped me from manually changing more than 5000 comments in a worksheet, or having to install some Excel extension.
.Shape.AutoShapeType = msoShapeRectangle
.Shape.TextFrame.Characters.Font.Name = "Calibri"
.Shape.TextFrame.Characters.Font.Size = 10
.Shape.TextFrame.AutoMargins = True
.Shape.TextFrame.AutoSize = True
Thanks a lot!
This was helpful, thank you
I think this is among the most significant
information for me. And i am glad reading your article.
But wanna remark on some general things, The site style is great,
the articles is really great : D. Good job, cheers
Is there code to add to this that will format a particular part of the comment (i.e. make the last sentence in the comment bold and in italics)?
This is fantastic!
How would I add auto-sizing to it?
I tried adding this:
.Shape.AutoSize = True but it gives me an error and as a novice at VBA I can't figure it out.
.Shape.TextFrame.AutoSize = True
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How should the code be changed in order to tun once for all worksheets in a workbook?