What is your favorite "data analysis" cartoon? Data analysis cartoons can be useful for many reasons: they help communicate; they show that quantitative people have a sense of humor too; they can instigate good teaching moments; and they can help us remember important principles and lessons.
This is one of my favorites:

As a service to those who value this kind of resource, please share your favorite data analysis cartoon.  They probably don't need any explanation (if they do, they're probably not good cartoons!)  As always, one entry per answer. (This is in the vein of the Stack Overflow question What’s your favorite “programmer” cartoon?.)
P.S. Do not hotlink the cartoon without the site's permission please.
 A: There is this one on Bayesian learning:

A: And another one from xkcd.  
Title: Self-Description

The mouseover text:  

The contents of any one panel are
  dependent on the contents of every
  panel including itself. The graph of
  panel dependencies is complete and
  bidirectional, and each node has a
  loop. The mouseover text has two
  hundred and forty-two characters.

A: "Curve-Fitting Methods and the Messages They Send" by xkcd: https://xkcd.com/2048/

A:  My favorite was created by Emanuel Parzen, appearing in IMA preprint 663, but this illustrates my degenerate sense of humor. 
Gorbachev says to Bush: "that's a very nice golfcart, Mr. President. Can it change how statistics is practiced?" etc. hahahah.
A: http://www.gocomics.com/strangebrew/2011/10/11/

A: Note: this is from SMBC (Saturday Morning Breakfast Cereal) by Zach Weiner. 

A: Here is a nice one (the inadequacy about average ratings)

A: Another one from xkcd:

Alt-text:

Hell, my eighth grade science class managed to conclusively reject it just based on a classroom experiment. It's pretty sad to hear about million-dollar research teams who can't even manage that.

A: Here's another one from Dilbert:

A: A new one from XKCD, suggesting a preference for a particular plot type:
https://xkcd.com/1967/

hover text: Strictly speaking, 'violin' refers to the internal structure of the data. The external portion visible in the plot is called the 'viola.'
A: 
http://andrewgelman.com/2011/12/suspicious-histograms/
A: More about design and power than analysis, but I like this one

A: I liked this one:

This is probably fun to show in class as well...
A: Correlation does not imply causation!

A: Statisticians aren't easily cowed.

A: A classic... 

A: 
Source: unknown. Posted on flowingdata.com.
A: 
Saturday Morning Breakfast Cereal
A: 
Found this one in the comments on Andrew Gelman's blog.
A: I found this from a NoSQL presentation, but the cartoon can be found directly at
http://browsertoolkit.com/fault-tolerance.png

A: Source: http://www.gocomics.com/andertoons/2014/06/15#.U54J7iigS8A by Mark Anderson, June 15, 2014.

A: Allright, I think this one is hilarious- but let's see if it passes the Statistical Analysis Miller test.
Fermirotica


I love how Google handles dimensional analysis.  Stats are ballpark and vary wildly by time of day and whether your mom is in town.

A: From xkcd:

This is data analysis in the form of a cartoon, and I find it particularly poignant.

The universe is probably littered with the one-planet graves of cultures which made the sensible economic decision that there's no good reason to go into space--each discovered, studied, and remembered by the ones who made the irrational decision.

A: Another one from xkcd:

A: 
A: More of a math cartoon than a data analysis cartoon, but also one that makes you think a bit.
http://www.gocomics.com/barneyandclyde/2013/11/12/?view=full#.UoI73-KQOfs

A: Here's a somewhat more technical one.

A: I don't think this one was posted yet... 
A: Here is a very meaningful chart..

A: From xkcd:

If some people who really believe that everything should be scientifically tested would actually walk their talk than they this comic might even show an event that actually happens.
A: Another one from xkcd:

Hover Text:

Knuth Paper-Stack Notation: Write down the number on pages. Stack
  them. If the stack is too tall to fit in the room, write down the
  number of pages it would take to write down the number. THAT number
  won't fit in the room? Repeat. When a stack fits, write the number of
  iterations on a card. Pin it to the stack.

A: ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​
A: 
From tenso GRAPHICS, as claimed on REDDIT.
A: 
Saturday Morning Breakfast Cereal
And the votey (a sort of black-and-white epilogue unique to SMBC):

A: Overfitting -explanation in a picture (original cartoon)  
A: 
True if $P=NP$

True if $P \ne NP$
This is  great one about solving NP-complete problems. They come up a lot on the job, like efficient scheduling or how to select the optimal configuration among a number of various options for which you have to search through them all to find the best one. 
Think about it anytime you need to cop out of something difficult at work!
A: Gahan Wilson died this week; having presented many a confusing graph myself, I can relate to this: 
A: A Frequentists vs. Bayesians cartoon from XKCD!

Mouse-hover transcript: 

'Detector! What would the Bayesian statistician say if I asked whether the--' [roll] 'I AM A NEUTRINO DETECTOR, NOT A LABYRINTH GUARD. SERIOUSLY, DID YOUR BRAIN FALL OUT?' [roll] '... Yes.'

A: From SMBC:

A: This is not a cartoon, but a joke worth mentioning:
A statistic professor travels to a conference by plane. When he passes the security check, they discover a bomb in his carry-on-baggage. Of course, he is hauled off immediately for interrogation. 
"I don't understand it!" the interrogating officer exclaims. "You're an accomplished professional, a caring family man, a pillar of your parish - and now you want to destroy that all by blowing up an airplane!" 
"Sorry", the professor interrupts him. "I had never intended to blow up the plane." 
"So, for what reason else did you try to bring a bomb on board?!" 
"Let me explain. Statistics shows that the probability of a bomb being on an airplane is 1/1000. That's quite high if you think about it - so high that I wouldn't have any peace of mind on a flight." 
"And what does this have to do with you bringing a bomb on board of a plane?" 
"You see, since the probability of one bomb being on my plane is 1/1000, the chance that there are two bombs is 1/1000000. This way I am much safer..."
A: Explaining Away
Since these are a rather sampling theoretic set of cartoons so far, here's one for the Bayesians.  (Actually I set it as a class question last year.)

A: 
Not a cartoon but the best way of not being confused about type I and II errors. And very funny IMHO
A: 
"The bridge of life"
I took this image from here. This is a "Painting commissioned by Karl Pearson", see. It is considered as a predecessor of the hazard function. 
The 'Death' attempts to kill you at different ages using different sorts of weapons which are related to the "failure probability" at the corresponding age.
A: Was XKCD, so time for Dilbert:

Source: http://dilbert.com/strip/2001-10-25
A: This one may be a little too real for anyone involved in academic research...

See the original here.
A: Another from XKCD:

Mentioned here and here.
A: Because It's PIE, make me laught LOL. hahaha http://portal-statistik.blogspot.com
A: This one is a hit :)! I've seen it a few days ago.

A: My favourite Dilbert cartoon:

Source: http://dilbert.com/strip/2008-05-07
A: Draw your own data , found it in the below link
[New Year] : http://robertgrantstats.co.uk/drawmydata.html
 
A: One more Dilbert cartoon:

...
A: One of my favorites from xckd:
Random Number


RFC 1149.5 specifies 4 as the standard IEEE-vetted random number.

A: 
Sorry it is in Dutch! Translation


*

*Greetings new recruits! Welcome to the training camp for gladiators

*Be warned! One in three of you does not survive the training

*33.3% ... That's not so bad

A: 
an 'easy to digest' pie chart example for Rick Astley fans that my students seem to enjoy
A: From xkcd:
Almost a Chi square...


As the CoKF approaches 0, productivity goes negative as you pull OTHER people into chair-spinning contests.

A: 
A: I wonder if it's OK to use %-points as an abbreviation of percentage points.
http://xkcd.com/985/

A: Quite a trend (I am the one on the left with the laptop)

A: 
From: A visual comparison of normal and paranormal distributions Matthew Freeman
J Epidemiol Community Health 2006;60:6. Lower caption says 'Paranormal Distribution' - no idea why the graphical artifact is occuring.
A: 

'So, uh, we did the green study again and got no link. It was probably a--' 'RESEARCH CONFLICTED ON GREEN JELLY BEAN/ACNE LINK; MORE STUDY RECOMMENDED!'

xkcd: significant
A: No one put up a cartoon from the cartoon guide to statistics.  I like many of them from there and I used a number of them in one of my books.  The one that seems to get the most laughs when I use it in a lecture is the one with the statistician going out on a first date.  Their comments and thoughts about the making decisions on the menu with the statistician assessing probabilities and the woman just choosing what she likes makes it really hilarious.

A: 
I liked this one. Found on this page.
A: I just came across this and loved it:

(http://xkcd.com/795/).
A: 
This one makes you think about the importance of thinking about conditional probabilities. Now I don't know what to make of the twist at the end.
A: From XKCD:


Though 100 years is longer than a lot of our resources.

A: 
A: Another from xkcd #833:


And if you labeled your axes, I could tell you exactly how MUCH better.

A: 
John Deering, Strange Brew
A: My favorite is Sidney Harris he has many great cartoons
A: Yes, let's not jump to random forest before we work on some simpler branches!
http://www.gocomics.com/andertoons/2015/12/17

A: 
Life...
"Hearing something a hundred times isn't better than seeing it once"
A: 

By the third trimester, there will be hundreds of babies inside you.

Also from XKCD
A: Not exactly data analysis but I had a chuckle.

A: This one might be useful when introducing the concept of experimental and control groups.
http://www.gocomics.com/looseparts/2015/12/08 

A: This isn't technically a cartoon, but close enough:

A: Nice.
The importance of variance when thinking about a population.

Saturday Morning Breakfast Cereal
A: this too:

A: http://www.gocomics.com/frazz/2012/03/27/

A: 
Loose Parts by Dave Blazek 1/10/2018
A: 
The cartoon can actually be found here https://thejenkinscomic.wordpress.com/
