1.4 - 1.6 notes test Flashcards
The ______________, denoted by r, is a number from -1 to 1 that measures how well a line fits a set of data points. WHen r is near 1, the points lie close to the line with a positive slope. When r is near -1, the points lie close to a line with a negative slope. When r is near zero, the points do not lie close to any line.
Correlation coefficient
The ____ is the line that lies as close as possible to a set of data points.
Line of best fit
A ___ , x, y, and z, is an equation of the form ax +by + cz = d, where a, b, and c are not all 0.
Linear equation in three variables
A solution of a system of three linear equations in 3 variables I am ___ (x,y,z) whose coordinates make each equation true.
Ordered triple
A ____ is a rectangular arrangement of numbers
Matrix
The ____ of a matrix with m rows and n columns are m x n.
dimensions
The numbers in a matrix are its _____.
elements
