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Least Square Method(Least Mean Square) The way how to obtain parameters to minimize the sum of data and residual(error). In other words, to obtain parameters(a, b) with minimum E. - y = f(x) : Linear - ei : Residual(Error) - (xi, yi) : Data - a, b : Parameters y = f(x) : Linear Regression It can be expressed as below. Error Distance between the point and y. Sum of the square errors Matrix Equati..

Derivative The slope at a point. The rate of change of the function. HTML 삽입 미리보기할 수 없는 소스 Slope(Gradient of a line) A line is a number that describes both the direction and the steepness of the line. Polynomial Function Derivative Using the Factorization above, derive a derivative for the polynomial function below. Product Rule https://m.blog.naver.com/heoyoonhomath/223007374901 https://blog.na..

variance - σ2 is variance - X is the variable - μ is mean - N is the total number of variables. Standard deviation A square root of variance. For instance, Covariance It measures the directional relationship between the returns on two assets. A positive covariance means asset returns move together, while a negative covariance means they move inversely. COVARIANCE.P(x,y); 데이터가 모집단일 경우, n 으로 나눠줌 C..

log Log to Exponential Form Log to exponential form is a common form of converting one form of a mathematical expression to another form. Both these forms help in the easy calculation of huge numeric values. For example, Logarithmic laws https://www.youtube.com/watch?v=giBw0L5wE2I&list=PLBPUzs26iQhpxyBcHSs-dI9pW19jaslcq&index=7

Sine, Cosine and Tangent are the main functions used in Trigonometry and are based on a Right-Angled Triangle. Right-Angled Triangle A right-angled triangle (also called a right triangle) is a triangle with a right angle (90°) in it. A name to each side of a right triangle Sine, Cosine and Tangent Sine Example 1. - 30°, 150° - walking distance is 100m - Height : 2/1 * walking distance Example 2...