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@ilyootha Glad to help!  These concepts are much easier to understand if you can visualize them.

4 days ago on Series 8: A Numbery-Wumbery Breakdown

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@ilyootha @supermoff It is helpful to think of a simple graph when trying to understand the PMCC (which is more commonly known as Pearson's r, or just plain r - it is the number Excel calculates if you use its correlation function).  You use the PMCC to answer the question "Hey, if I measure this one thing, does it tell me something about this other thing?"  What supermoff has done is asked "If I know the AI score, can I predict the DWTV ranking, or vice versa?"


Make a graph of the AI vs. DWTV scores with the horizontal axis of the graph represent the AI scores and the vertical axis the DWTV scores.  For each episode put a dot on the graph where those two scores intersect.  Both measure audience appreciation of an episode, the AI for general viewers, DWTV for fans, so some positive correlation is expected.  The higher the positive correlation (the closer the PMCC is to one) the more the dots on your graph will line up from lower left to upper right.  In a perfect correlation the dots would form a straight line.  Similarly, if there were a perfect negative correlation (-1) the dots would form a straight line sloping down from upper left to lower right.  The lower the correlation, the closer the correlation is to zero, the less the dots will resemble a straight line.  Generally, the measures would form a big fuzzy ball.  A graph of dots forming a fuzzy ball says that knowing one score tells you nothing about the other score.  In other words, an episode with a high AI score is equally likely to have a low DWTV ranking as it is to have a high DWTV ranking.      

Not to complicate things but a big underlying assumption in the calculation of Pearson's r is that the relationship between variables, if any, is linear and continuous.  Not exponential, not logarithmic, not sinusoidal, no discontinuities, no changing slopes, etc.

One final bit.  When used in scientific research Pearson's r is interesting, but what's more interesting is squaring that number.  R-squared tells you how much of the variance in one variable can be explained by variance in the second variable.  The r-squared value for the AI-DWTV correlation is just under 0.16.  That says 16 percent of the variation in AI scores can be explained just by looking at DWTV rankings (or vice versa).  That's actually pretty low, and, as we've often seen in the comments here after both scores come in, indicates that you wouldn't want to rely solely on DWTV rankings to predict what the general audience thinks of the show.













4 days, 10 hours ago on Series 8: A Numbery-Wumbery Breakdown

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@supermoff Interesting stuff!  Is the AI-DWTV comparison based on just S8 or for several series?  If it is the former Pearson's r isn't meaningful with only twelve data points.  

4 days, 12 hours ago on Series 8: A Numbery-Wumbery Breakdown

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@The Finn @supermoff @TheOncomingHurricane @Mark McCullough Think of all the Clara splinters there were running around in the Doctor's time stream.  Regular Clara is 5' 2" tall.  The splinters are going to cluster around that height, but given the food they have available and the gravity of the planets they visit there will be some variation in height.   Quite a few splinter Claras will be an inch shorter, while others will be an inch taller.  A lesser amount will be two inches shorter or taller, even fewer will be three inches shorter/taller, etc. That distribution is the bell-shaped curve of the normal distribution.


Not all bells have the same shape.  All individuals in a Sontaran clone batch are genetically identical and should all be near the same height.  But, like for the Clara splinters there will be variations.  While their average height is five feet, there will be clones who turn out to be a quarter-inch taller/shorter, a lesser amount who are a half-inch taller/shorter, etc.   



Kurtosis is the measure of how far the distribution varies from the ideal bell shape.  The Sontarans, with their height clustering very near the average height are going to have a leptokurtic (yes, that's a word!) distribution.  Variations in the heights of the Clara splinters would probably be very close to a regular bell curve.  

Assuming Zygons are just as happy imitation horses as they are bunnies and humans, they are probably going to have a wide range of heights if measured when they are taking on the form of those other beings.  A wide distribution like that is known as platykurtic.  The most well known platykurtic distributions are those of a fair coin or die.  In both of those cases there is no clustering but an equal distribution of heads/tails or 1/2/3/4/5/6 dots on a die.



4 days, 12 hours ago on Series 8: A Numbery-Wumbery Breakdown

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Darn!

4 days, 19 hours ago on Christmas Special: Santa is Real, Not Evil

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Maybe they can dig up the parrot from The Pirate Planet.

5 days, 14 hours ago on Moffat Can’t Confirm Jenna Coleman for Series 9

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@Whovian It will keep us entertained for the next six weeks!

5 days, 23 hours ago on Moffat Can’t Confirm Jenna Coleman for Series 9

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@DylanKeithBrown Why can't there be loose ends?

5 days, 23 hours ago on Moffat Can’t Confirm Jenna Coleman for Series 9

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@ilyootha @Typo42 A Gent of Clare @TheOncomingHurricane @Rani Nose @Strontium Why would either be upset by a silly ten-second joke?

6 days, 18 hours ago on BBC Declares Series 8 A Triumph

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@TheOncomingHurricane @Rani Nose @Strontium How would the title sequence demean them?  This just sounds like teenage internet drama.

6 days, 19 hours ago on BBC Declares Series 8 A Triumph

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@Strontium Who was demeaned by the Death in Heaven Title sequence?

6 days, 20 hours ago on BBC Declares Series 8 A Triumph

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@I couldn't keep calling myself... The Master! Doctor Who has averaged a little over a million viewers per episode on BBC America.

1 week ago on Doctor Who Series 8 UK Ratings Accumulator

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@Aztecs, Daleks and Cavemen The headline is misleading.  Moffat only said it would be silly to use the Daleks every year only because of a contract. He said nothing about whether or not such a contract exists.  If such a contract does exist it may indeed be stupid for the show to be constrained by it, but it makes sense for the Terry Nation estate to retain control over their intellectual property.  It must be said, however, that without their continued use in Doctor Who there isn't much value in the Daleks.

1 week, 1 day ago on Moffat: Daleks Are Not A Contractual Obligation

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@Raingembow What suggests that to you?  Several people have said the same but for the life of me I can't figure out why.   

The Dream Lord was brought on by psychic pollen from some far away place accidentally getting into the time rotor.  That's such specific, one-off, problem.  For it to happen again the Doctor would have to carelessly take his TARDIS back to the same location and not take any measures against the psychic pollen. In-universe it makes little sense that the Doctor would do such a thing.  Extra-universe I can't see Moffat relying on such a "just so" set of blunders to make the Dream Lord return.

1 week, 1 day ago on 2014 Christmas Special: Children in Need Clip

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@Planet of the Deaf Could just be Jenna got a haircut.

1 week, 1 day ago on 2014 Christmas Special: Children in Need Clip

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@The Lazy Cat's Soufflé Was too Beautiful to Live To give them a happy ending.  Their parting in Death in Heaven was bittersweet and came at the end of a very "heavy" episode.  Bringing Clara back for a lighter, more fun, adventure would make for a happier swan song.

1 week, 2 days ago on 2014 Christmas Special: Children in Need Clip

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I didn't notice this on first viewing, but it appears Santa and his elves crashed on the roof.  Clara is in a bathrobe so I'm assuming she heard the crash and rushed up to the roof.  But, that is not the roof of her building...  How long 'til Christmas?


1 week, 2 days ago on 2014 Christmas Special: Children in Need Clip

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That's all I could get.

1 week, 2 days ago on 2014 Christmas Special: Children in Need Clip

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Because they are on a set with just walls?

1 week, 2 days ago on 2014 Christmas Special: Children in Need Clip

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Oh, and two of Moffat's Christmas specials didn't really have villains in the bad person/creature behaving badly sense.

1 week, 2 days ago on 2014 Christmas Special: Children in Need Clip

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Listen, Kill the Moon and In the Forest of the Night all had no villain, and the mummy was as much victim as villain.

1 week, 2 days ago on 2014 Christmas Special: Children in Need Clip

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@jamesanash101 At some point, perhaps not so long ago, getting fresh citrus fruit in winter was a very big deal.  I assume the current tradition of getting a tangerine reflects those earlier times.

1 week, 2 days ago on 2014 Christmas Special: Children in Need Clip

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Will there even be a villain?

1 week, 2 days ago on 2014 Christmas Special: Children in Need Clip

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Interesting. What brought Santa and Clara together? What is the Doctor's urgency in getti Clara into the TARDIS? How long have Clara and the Doctor been apart?

1 week, 2 days ago on 2014 Christmas Special: Children in Need Clip

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What would tangerines be a metaphor for?

1 week, 2 days ago on 2014 Christmas Special: Children in Need Clip

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@kanlo I don't know.  Companions are people and about the biggest, most important, thing people do in their lives is fall in love so it seems rather odd to want a companion lacking in the most basic of human qualities.  

1 week, 2 days ago on Moffat Mulls Future Companion Not Being Another Earth Girl

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@NotsoSmartguy Too insular.  Introducing a new character without any connections to the Doctor expands the Who universe.

1 week, 3 days ago on Moffat Mulls Future Companion Not Being Another Earth Girl

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@Scribey Would you really want this Doctor, a self-described idiot, mentoring anybody?  

1 week, 3 days ago on Moffat Mulls Future Companion Not Being Another Earth Girl

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@Scribey The "mouth on legs" was Tegan, not Nyssa.

1 week, 3 days ago on Moffat Mulls Future Companion Not Being Another Earth Girl

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Considering a companion's age, sex or planet of origin should probably play second fiddle to how that companion would interact with Twelve.  Judging by recent companions I can't see someone like Rose or Martha would make a good match for Capaldi's Doctor.  I don't think Rose would be interesting to him and Martha wouldn't stand up to him.  Someone like Donna or Amy would make a much better counterpoint in that they would always drag the idiot in a box back closer to reality.  A sciency person like the late Osgood would work too, as they would balance the flighty Doctor with a calm analysis of whatever situation they are in.


1 week, 3 days ago on Moffat Mulls Future Companion Not Being Another Earth Girl

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@JohnJordanRoberts Why did you think it was awful?  Most people thought it was a return to form and ranks as one of the better series since the show was revived..

1 week, 4 days ago on Moffat: Making Doctor Who Doesn’t Get Any Easier

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That was Clara's hand. It just looks weird because it was shot with a. Wide angle lens.

1 week, 4 days ago on 2nd Opinion: Death in Heaven

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Sure, but what does one person, or a gaggle of people, in a cemetery have to do with the story? The answer is they have nothing to do with the story. Moffat left them out because including extraneous people would have subtracted from the story rather than adding to it.

1 week, 4 days ago on 2nd Opinion: Death in Heaven

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@TheOncomingHurricane @MWTV Orphan Black will fill up ten of those Saturday evenings in the US and Canada.

1 week, 4 days ago on Christmas Special Preview at Children in Need 2014

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@TheTimeTraveller is excited for Christmas Is it the same one he wore in Time Heist?

1 week, 4 days ago on Christmas Special Preview at Children in Need 2014

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I'm glad to hear Missy will return!  I don't see why people are so shocked that Gomez has revealed this information.  Not every appearance by every returning character needs to be a surprise.  In this just concluded season we knew long ahead of their appearance that the Daleks and Cybermen would be returning.

1 week, 4 days ago on Michelle Gomez Reveals Series 9 Return, Rani Trickery

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@Merganman4  "the Master (or is it Mistress?  Still not sure which I should call her)"

The standard courtesy is refer to people in the way they want to be referred.  Missy made it clear in Dark Water that she is a Time Lady, and wants to be called Missy.  She said "I couldn't very well keep calling myself the Master now, could I?" so we should refer to her as Missy.




1 week, 4 days ago on Michelle Gomez Reveals Series 9 Return, Rani Trickery

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Follow the Twitter accounts for Freema and some of the classic companions and you'll soon see that they are tweeting to each other, meeting up, etc. that probably has a bit to do with appearing at conventions together, but they do keep in touch.

1 week, 4 days ago on New Who Finales in Perspective: Series 3

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It could easily be ten or twenty years before Gallifrey is found. Finding Gallifrey isNot a goal, but the structure around which many series arcs can be built. This is no different than being a rebel and running away from Gallifrey was the structure during the classic era, or how recovering from the Time War was the structure for the first seven series of the revived show.

1 week, 4 days ago on Moffat on Series 8 Ratings: There is no drop-off

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Zombie Osgood?

1 week, 4 days ago on Michelle Gomez Reveals Series 9 Return, Rani Trickery

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Shouldn't this headline be "Michelle Gomez Defends Against Finale Complaints"?  She is not defending the complaints, she is defending the show.

1 week, 5 days ago on Michelle Gomez Defends Against Finale Complaints

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@sontaran17 is being upgraded I would doubt that too.  He writes functional, but often trite and overwrought, music to fit scenes.  Some of it is quite lovely.  

The bigger problem, and not Gold's fault, is how the show uses his music.  It often feels like they are so insecure in the rest of the production that they over compensate with music to tell us what is going on.  It is as if they don't trust the audience to understand there is an action sequence or a solemn scene and have to blast "action sequence music" or "solemn music" at us so we catch on.  That is okay if used sparingly, but doing so in every single scene gets tiresome and insulting.

1 week, 5 days ago on New Who Finales in Perspective: Series 2

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Not all of us consider Murray Gold to be a musical genius.

1 week, 5 days ago on New Who Finales in Perspective: Series 2

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@Browncoat of arms It's hard to imagine any professionally produced show, not just Doctor Who, getting a score that low and being broadcast.  For a show to get a score that low from me they'd have to keep in scenes with egregious errors (actor forgetting lines, using the wrong accent, running the wrong direction, set/props breaking) or the story would have to be deadly dull, or the direction incoherent.

1 week, 6 days ago on Your Verdict on Dark Water & Episode Ranking

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@M-M-G What, exactly, is "up" other than you coming here week after week being the boy who cried bad wolf?

1 week, 6 days ago on Doctor Who Series 8 UK Ratings Accumulator

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I loved William Hurt's portrayal of the dim witted Doctor.

2 weeks ago on Poll: Capaldi’s Doctor – Hit or Miss?

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Missy is a woman so you refer to her as "she". Why is this confusing?

2 weeks ago on Moffat on Finale Death, Master Future

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Missy was killed by the Cyber-Brigadier, not the Doctor.

2 weeks ago on Moffat on Finale Death, Master Future

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I think this vote will be a landslide.

2 weeks ago on Poll: Capaldi’s Doctor – Hit or Miss?

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