Why get the sum of squares instead of the sum of absolute values?
On one hand, it seems squaring them will allow us to get a positive number when the expected value is less than the actual value. But why can't this just be accounted for by taking the sum of the absolute …
I was trying to understand QUAKE III fast inverse square root alg and i ...
Mar 5, 2024 · I was trying to understand QUAKE III fast inverse square root alg and i want to find best 'u' value in $\log_2 (x+1)≈x+u$ approximation Ask Question Asked 1 year, 9 months ago Modified 1 …
Understanding “the mean minimizes the mean squared error”
Given the following distribution Y = [5,3,2,7,4], minimizing MSE I intended as in the following: I should find a function Y_hat such that when it is applied to the MSE formula (more specifically to each …
SOLUTION: The owner of Britten’s Egg Farm wants to estimate the …
Question 1202936: The owner of Britten’s Egg Farm wants to estimate the mean number of eggs produced per chicken. A sample of 15 chickens shows they produced an average of 22 eggs per …
Algebra Homework Help, Algebra Solvers, Free Math Tutors
Algebra, math homework solvers, lessons and free tutors online.Pre-algebra, Algebra I, Algebra II, Geometry, Physics. Created by our FREE tutors. Solvers with work shown, write algebra lessons, …
How is the value of $\pi$ ( Pi ) actually calculated?
The answer you have marked as accepted is not a method for deriving $\pi$ since the formula depend on the value of $\pi$. I urge you to unmark it.
Why do we use a Least Squares fit? - Mathematics Stack Exchange
Least squares fitting has the desirable property that if you have two different output values for the same input value, and you replace them with two copies of their mean, the least squares fit is unaffected.
On the invertibility of the adjacency matrix of a graph
Jul 17, 2018 · I think a general set of conditions will be hard to come by. To substantiate this claim I make the following negative observation. The adjacency matrix of any bipartite graph with an odd …
An amazing approximation of $e$ - Mathematics Stack Exchange
Sep 28, 2016 · As we can read in Wolfram Mathworld's article on approximations of $e$, the base of natural logarithm, An amazing pandigital approximation to e that is correct to ...
Fractional approximation of $e$ - Mathematics Stack Exchange
Aug 22, 2022 · This kind seems to sidestep the question---you have assumed that the asker is familiar with continued fractions, then showed why $\mathrm {e}$ should be less well approximable than …