How do you calculate a DNF into an average?

[SparkZer00]

I am not taking out the best and worst solves, and I am curious as to how calculating mathematically a DNF or DNS would take place in an average

Is knowing the time that the timer was stopped at crucial to this calculation?

I have no idea how to answer these questions

 

[Ryanrex116]

If a DNF or DNS is counted in an average, the average is DNF.

The time does not matter. If you did not finish, you did not finish.

25.57, 23.46, DNF= DNF

26.75, (DNF), DNF, 23.45, 29.85= DNF

(DNF) 13.23, 25.54, (56.34), 19.65= Not a DNF

 

[byu]

Yeah.

If you remove best and worst:

1 DNF - Ignore it, it counts as the worst.
2+ DNFs - Average is DNF.

 

[spdcbr]

What is a DNS let alone a DNF?

 

[byu]

What is a DNS let alone a DNF?

DNF - Did Not Finish
DNS - Did Not Start

DNF is like when you stop the timer and the cube still isn't solved.

DNS is when you don't even start solving it, happened to me in 4x4 because I didn't get under the qualification time.

 

[spdcbr]

Hmmmm...does a gargantuan pop count as a DNF? What you mean by DNS? You mean you start the timer and forget to solve your cube?

 

[byu]

Hmmmm...does a gargantuan pop count as a DNF? What you mean by DNS? You mean you start the timer and forget to solve your cube?

A pop is a DNF if you don't fix it.

No a DNS is like where you never even solve. For example, I did two 4x4 solves and they weren't low enough to continue the average so I got three DNSs, I think, maybe I got 3 solves.

 

[SparkZer00]

Let's say I did an average of 12 and had only one dnf, you guys are just saying that I add the other 11 solves, and then divide by 12?

 

[Pedro]

Hmmmm...does a gargantuan pop count as a DNF? What you mean by DNS? You mean you start the timer and forget to solve your cube?

A pop is a DNF if you don't fix it.

No a DNS is like where you never even solve. For example, I did two 4x4 solves and they weren't low enough to continue the average so I got three DNSs, I think, maybe I got 3 solves.

or when you don't wait for the green light before starting to solve

 

[byu]

Hmmmm...does a gargantuan pop count as a DNF? What you mean by DNS? You mean you start the timer and forget to solve your cube?

A pop is a DNF if you don't fix it.

No a DNS is like where you never even solve. For example, I did two 4x4 solves and they weren't low enough to continue the average so I got three DNSs, I think, maybe I got 3 solves.

or when you don't wait for the green light before starting to solve

My brother didn't wait for the green light once in competition. He got to redo the solve. But that was in Rubik's Magic, maybe 3x3 is different.


I forget to wait for the light all the time at home. One time I knew I had a sub-12 and then I stopped the timer and it was at 0.00

 

[qqwref]

Let's say I did an average of 12 and had only one dnf, you guys are just saying that I add the other 11 solves, and then divide by 12?

Here's the way it works: a DNF is basically counted as the worst possible result. Infinite time. If you are taking the average of a bunch of times, and you have a counting DNF, the average is ALWAYS DNF, no matter what the other times were.

Why would you take an average of 12 without removing the best and worst time, though?

 

[Lucas Garron]

DNF (= DNS) = ∞

DNS is just different from DNF for bookkeeping purposes, really...

Why is this puzzle theory?

 

[JLarsen]

My words when I saw the thread "Puzzle theory?!"

 

[byu]

My words when I saw the thread "Puzzle theory?!"

I will say that sometimes it is hard to figure out what section to put a thread into, it might fit multiple, or possibly none at all.

However, this is not one of them. This is clearly not puzzle theory.

 

[IamWEB]

Beginner's Boards is clearly the home for this thread.



When we talk about average here, it's always after eliminating the best and worst solves. Typically they are an average of 5 (3 of the 5 solves, eliminate best and worst and average the rest [xx.xx time + xx.xx time + xx.xx time, divide by 3]), and an average of 12 (10 of the 12, etc.)

BEFORE ELIMINATING the best and the worst solves, whatever is there does not matter in any way.
AFTER ELIMINATING the best and worst solves, a DNF being there will automatically make the average DNF.

Basically, if all of the remaining solves are NOT times, you're pretty much screwed.

@b0ut POPs: No matter how big, you can always choose to fix the pop. Solve the cube as far as you can, and then you can make any needed changes to the cube and put it down to finish your solve. No penalty, just a crappy time.
If you stop the timer after a pop (without fixing it), you obviously get a DNF.

 

[Stefan]

Let's say I did an average of 12 and had only one dnf, you guys are just saying that I add the other 11 solves, and then divide by 12?

Yes, that's it! You can even improve your average further by DNFing more often, for example 6 times because then you get to add the other 6 and divide by 12. This will make you appear twice as fast as before! Woohoo!

 

[MatsBergsten]

Let's say I did an average of 12 and had only one dnf, you guys are just saying that I add the other 11 solves, and then divide by 12?

Yes, that's it! You can even improve your average further by DNFing more often, for example 6 times because then you get to add the other 6 and divide by 12. This will make you appear twice as fast as before! Woohoo!

Sometimes I find your sarcasms a little hard to appreciate. People are not computers and they do not speak (nor think) like computers.

But this one was really funny! I am still giggling after more than a minute

 

[SparkZer00]

I really didn't know where to put it, and I'm not a beginner

I didn't take out the best and worst times because... well, I don't know

I didn't put that average anywhere, so that wouldn't even matter anyway...

 

[rjohnson_8ball]

Let's say I did an average of 12 and had only one dnf, you guys are just saying that I add the other 11 solves, and then divide by 12?

IamWeb answered pretty well.

The nice thing about a session of 12 solves is that after tossing your best and worst time, taking the average of the remaining 10 is as simple as adding the times and moving the decimal point to the left.

See http://www.worldcubeassociation.org/regulations/#events
in particular section 9f, defining "average of 12", "average of 5", etc.

 

[stuvalt309]

Also you don't get ranked for single solve or average AT ALL if your best is a DNF.