- #1
JFonseka
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Homework Statement
Now this isn't a homework question, it's something me and some others are looking into, and someone posted this function, and I'm not sure how he worked it out:
Creating a function for Elvis' album sales based on the RIAA certifications of his albums that have been certified so far
69 albms - over 500,000 sales certified
39 albums - over 1,000,000
19 albums - over 2,000,000
11 albums - over 3,000,000
4 albums - over 4,000,000 and 5,000,000
2 albums - over 6,000,000
1 albums - over 9,000,000
Let exclude the 4 albums over 4 million, which could be estimated on their own and disturb the linear repartition of figures.
I set X = 500000*x
Then Elvis statistics are almost perfectly equal to the function 1/(1,23*x + 0,278).
Let x = 1 if you want to find albums that sold over 500,000
Let x = 2 if you want to find albums that sold over 1 million
etc.
So what he's done is used the figures from the albums certified to create an equation. So therefore if you substitute 1 for x in the function, which is actually equal to 500,000 you will get all the albums that certified for over 500,000 sales, it's not exact, but it's a close enough function, how did he work that function out?
Homework Equations
None
The Attempt at a Solution
I have no idea!
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