++ ATOT official NEF thread part IV ++

[MotF Bane]

Eli thread is becoming fun!

Cleaner is just now vacuuming, it's been more than two hours.

 

[MotF Bane]

It's gonna get messy! And our favorite Cowboys fan-troll is here. Go get him, ICF!

 

[alfa147x]

tartufe

 

[MotF Bane]

nef.

 

[busydude]

For diagnostic testing, let​

​

​

​

X = true status (1 = disease, 2 = no disease)
and Y = diagnosis (1 = positive, 2 = negative). Let πi = P(Y = 1|X = i),​

i​

​

​

​

​

= 1, 2.​

a.​

​

​

​

​

Explain why sensitivity = π1 and specificity = 1 − π2.​

b.​

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​

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Let γ denote the probability that a subject has the disease. Given that the
diagnosis is positive, use Bayes’s theorem to show that the probability a
subject truly has the disease is​

π​

​

​

​

​

1γ/[π1γ + π2(1 − γ )]​

c.​

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For mammograms for detecting breast cancer, suppose γ = 0.01,
sensitivity = 0.86, and specificity = 0.88. Given a positive test result, find
the probability that the woman truly has breast cancer.​

d.​

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To better understand the answer in (c), find the joint probabilities for the
2 × 2 cross classification of X and Y . Discuss their relative sizes in the two​

cells that refer to a positive test result.

 

[MotF Bane]

It's been nearly three hours, still not finished.

 

[MotF Bane]

My music is between 40-55 dB from right in front of the screen. The keyboard is definitely louder.

 

[MotF Bane]

Also, I think the cleaner is finally gone. :awe:

 

[IndyColtsFan]

Eli thread is becoming fun!

Cleaner is just now vacuuming, it's been more than two hours.

I just jumped into that thread after opening a can of worms in the Peyton thread about Baltimore's hypocrisy and their insane attempts at rationalizing it.

 

[MotF Bane]

Nef!

 

[alfa147x]

1211

 

[Gothgar]

nefresdh

 

[Gothgar]

Neffy?

 

[IndyColtsFan]

I've been watching them applying this the last few days:

 

[IndyColtsFan]

 

[IndyColtsFan]

 

[Gothgar]

OMG, really?

 

[IndyColtsFan]

OMG, really?

That's a 35 story building, too. I think they're adding more in that photo, meaning the photo had to be taken after rush hour this morning because the trophy was the only thing on the building this morning.

 

[IndyColtsFan]

Oh wait, nevermind. The football on the trophy was completely done this morning and looking at that photo, it isn't done there.

 

[Gothgar]

Oh wait, nevermind. The football on the trophy was completely done this morning and looking at that photo, it isn't done there.

Tourism I guess right

 

[IndyColtsFan]

Tourism I guess right

The whole city is gearing up for the SB. With the stadium being downtown and the fact I work downtown, it has been a mess much of the past year.

 

[busydude]

I like Indianapolis, nice city.

 

[Gothgar]

The whole city is gearing up for the SB. With the stadium being downtown and the fact I work downtown, it has been a mess much of the past year.

Fun.... traffic and construction everywhere I guess right?

 

[zzuupp]

ned

 

[IndyColtsFan]

Fun.... traffic and construction everywhere I guess right?

Construction is mostly done but many roads are closed and more will be closed starting next week. I'm working from home next Thursday and Friday because of it.