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Post From: Linear Regression between subgraphs

[2014-06-08 10:08:18] Link To Thread - Link To Post [Go To First Post]
Leo33 - Posts: 73
I want a number that quantifies for me how much subgraph A changes for a change in subgraph B, over N bars [N bars is time or volume] or: For a change in subgraph A over N bars, what is the change in subgraph B over N bars so: What's the linear relationship between X and Y N is an input A1 to AN the values of subgraph A over N bars B1 to BN the values of subgraph B over N bars I want as the output of the study the gradient M [+1 to -1] of a best fit straight line graph [A1 to AN] against [B1 to BN] Calculate the equation of the straight line y = -mx + C using least squares approach [?] [below from http://hotmath.com/hotmath_help/topics/line-of-best-fit.html] Step 1: Calculate the mean of the x-values and the mean of the y-values. Step 2: Compute the sum of the squares of the x-values. Step 3: Compute the sum of each x-value multiplied by its corresponding y-value. Step 4: Calculate the slope of the line ... [I can't copy/paste in the formulae from http://hotmath.com/hotmath_help/topics/line-of-best-fit.html] That slope is M it's my output +1 to -1 Date Time Of Last Edit: 2014-06-08 10:08:32