Hi I am trying to apply your formula to calculate the moving slope with a window of 8, by which I mean (for Row() > 7), I want to calculate the slope of the linear regression for the first set of x and y data points [1 to 8], and then the next set of 8 data points incrementing by 1 [2 to 9], and so on. I am trying to calculate the maximum slope to get the initial rate of an enzymatic reaction. Please can you tell me how you would modify your script to achieve this? I have tested your formula and I obtain the slope for all data points from Row 1 to Row n, rather than a moving window of defined size. Thank you in advance

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