Hi everyone!
I think it's quite interesing so I started a new topic.
I used Billboard's infrmation to find Hot100 formula. And... I found

Firstly, Points of Hot100 are calculating by formula:

Hot100 points = Digital Sales points + Radio Audience points + Streaming points

where streaming = On-demand numbers + Video(YouTube) views + radio streams numbers
Source: http://www.billboard.com/charts/streaming-songs

So to calculate Hot100 points I used:
Points=A*sales[in k] + B*AudienceImpressions[in m] + C*Streaming[in m]
where A+B+C=100

To find A, B and C i wrote a programme in C++(source code is here: http://pastebin.com/g2ghxEnA) I used August 21 - September 11 Billboard figures

The formula is:

Hot100 points = 3.5*sales[in K] + 4.5*AI[in m] + 92*Streaming[in m]

OK, So let's check if it works:


08/21/2013:
""Lines" and "Roar," in fact, are separated by just a 3.3% difference in overall chart points (with "Lines" down by 9% and "Roar" up by 1,262%)."

(2655.75-2582.6)/2582.6=2,7% - it's correct - we must remember sales/AI/streaming numbers are rounded!

08/28/2013
""Lines" and "Roar" are separated by a 13% difference in overall chart points, with "Lines" down by 8% and "Roar," 17%."

Roar change: (2146.4-2582.6)/2582.6=-16.9% - correct
Blurred Lines change: (2435.55-2655.75)/2655.75=-8.3% - correct
Difference: (2435.55-2146.4)/2146.4=13.47% - correct(near)

09/04/2013
"Registering a 17% gain in overall Hot 100 chart points, "Roar" leads Digital Songs for a third week, selling 448,000 downloads for the week ending Sept. 1 (up 14%), according to Nielsen SoundScan, after Perry performed it the previous Sunday (Aug. 25) at the end of the MTV Video Music Awards."

(2501.3-2146.4)/2146.4=16.53% - correct

"The advance of "Roar" halts the 12-week rule of Thicke's "Lines" (1-2; down 2% in Hot 100 points; the former leads the latter by a 4% margin)."

(2392.9-2435.55)/2435.55=-1.75% - correct

"Following her now-fabled VMAs appearance, Cyrus scores a 16% Hot 100 points gain for "We Can't Stop" (which peaked at No. 2 for three weeks) but backtracks 3-4 with the arrival of Eminem's new song."

(1551.2-1336.8)/1336.8=16,03% - correct

I hope you understood my post(my english is very bad...) and it will be helpfull

...you overcomplicated that just a biT.



Simplified explanation:

Sales tracking runs Monday-Sunday
Airplay tracking runs Wednesday-Tuesday
New chart released Thursday, 2 days after airplay tracking ends.

Chart ranking is based on points.

Forumla:
Total sales amount divided by 12
Total radio audience impressions divided by 7500
Overall USA streaming views (Vevo/Spotify) divided by 450

Example:

412,000 sales / 12 = 34,333 points
111,000,000 audience impressions on radio / 7500 = 14,800 points
10,100,000 streaming views/ 450 = 22,444 points
= 71,577 total points.

Whoever has the most points wins.

Wow. Thanks for the breakdown.

This is really cool, thanks

Wow, thanks a lot

And @Save-Me-Oprah we used that formula you posted and it didn't work for this week, if we use it they give a little advantage of BL over "Roar"

Thanks a lot @popmusic This means a lot, you deserve a for this. I totally understand you

I like how you also broke down each week's analysis and the math to prove it.

I see Bill Werde visiting this thread and coming for @popmusic because of revealing the secret

Perhaps the formula has been tweaked since I wrote that post (I just copied it from a post I made a while ago) but it's still a much simpler way of explaining it to the challenged.

Thanks

Wow, thanks. And yas at Applause gaining points.

hopefully Britney will snatch Lorde's wig

i'm just going to bookmark this thread, because this has helped alot.

Thank you