Recent content by 1plus1is10

So, I discovered that I need to convert my data into a Histogram: Wikipedia: Histogram Then that will give me the Mode. And, hopefully, that is what I need. Coincidentally, I ran across the Central Limit Theorem: Wikipedia: Central Limit Theorem It makes me wonder if all I really needed was...

Okay, forget that webpage reference now. My problem is that my data (a1, a2, a3, etc.) are not convenient whole numbers that magically create a Mode.

So, after searching the web even more, I now think the math question that I am asking is: How do I calculate the Mode of a Skewed Distribution? Maybe someone would be willing to tell me in layman's terms what this webpage says: Mode of Grouped Data I'm unfortunately a 1+1=2 level guy.

Oh well. It is obvious that my choice of using "products and sales" is a distraction to the math calculations I wish to learn about. Allow me to use a different analogy... A person shoots a cannon 1000 times at different angles. Each cannonball has a different peak altitude. Some are duds and...

Summary: Calculating a "fixed profit" on inventory [Mentor Note -- after an initial move to the schoolwork forums, this thread turns out to be a General Math question after all (see posts #5-6), so it is moved back to the General Math forum] I have 1000 products for sell in a store. Some make...

After doing some more Googling "replace floor". I can now remodel my kitchen. Ha ha, just being funny. But I did find a couple of related hits: https://math.stackexchange.com/questions/680319/is-it-possible-to-rewrite-floor-functions-applied-to-a-fraction-using-only-the-a...

Mark44, I appreciate the fact you know C++ which is what I use to perform calculations. But this for me really is a "converting-to-basic-algebra" problem at the moment. I'm posting my "Math Notes" for you to get an idea of what I typically use to help me: A1 A2 A3 A4...

Yes, I know. I just do not know math markup code.

std::cout << 5.0-(4.0*floor(5.0/4.0));

Actually fmod(5.0, 4.0) is 1.0 and anuttarasammyak is on the right path with converting it that way. You can test it here http://cpp.sh/ #include <iostream> #include <cmath> int main(){ std::cout << fmod(5.0, 4.0); }The problem becomes, I have no idea how to do algebra with FLOOR unless it can...

I have: a = FMOD(((x*y)-z), x) / x When I look at this, I think it could most likely be simplified algebraically if I could only replace FMOD with algebraic math. After searching the web, I realize that this is more than I would know how to do since FMOD uses FLOOR. Anyway, I thought I would...

To focus on Math... Linear Regression has a slope of: cov(x,y)/var(x) Correlation is: cov(x,y)/sqrt(var(x)*var(y)) So why are you calculating cov(x,y)2

I'm guessing this youtube video might interest you (start at 4:00): (regarding Principal Component Analysis)

After toying with this some more and also stopping to ask, "what do I actually see", I think I now understand the problem: = It's all relative (it's all about scale). Basically, if I look at each side of my graph independently, then the PCC results make much more sense. More specifically, the...

PS... Straight can be up or down also, not just flat. As long as it is compact and straight.