Power Regression


The power regression option finds the equation of an equation of the form y = axb that best fits a set of data. First, press selecting option AEDIT to enter the data .



The data shown here is the points {(2,11.4) (3,17) (5,27.3) (7,36.1) (11,47.7) (13,49.9)}



Press DREG to view the regression options.



For power regression, select opton 12Rg_axb using followed by eleven



Press and select power regression in the calculation screen. Now press followed by .



The best-fitting power equation for this data is:

y = 11.78x1.1


The regression equation can be automatically stored in the equation editor by entering the name of the equation, such as y1, after (L1,L2 as follows: choose option A and select y1 followed by .


Note: The Sharp calculates the correlation coefficient r, and the coefficient of determination, r2.