PSYC 2022 Chapter Notes - Chapter 16: Standard Deviation, Regression Analysis, Null Hypothesis
30 Nov 2016
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The criteria for best fitting line is determined by the error between the predicted y values on the line and the actual y values in the data. The regression equation is determined by the line with the smallest total squared error. A linear relationship bw 2 variables can be expressed vy the equation y=bx+a. Line provides a simplified description of the relationship: line can be used for prediction. Line establishes a precise one-to-one relationship bw each x value (sat score) and a corresponding y value (gpa) The value of a in the general equation is called the y-intercept because it determines the value of y when x=0 on a graph, the a value identifies the point where the line intercepts the y-axis. Plot at least 3 points on the graph to be certain no mistake. The statistical technique for finding the best-fitting straight line for a set of data. The resulting striaight line is called regression line.
