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x here is an independent variable, and y is the dependent variable which changes with the change in the value of x by a certain value.So the regression line can be defined as Y = a +bX which is Y = 1.5 + 0.95 * X Now, first calculate the intercept and slope for the regression equation.Ī (Intercept) is calculated using the formula given belowĪ = (((Σy) * (Σx 2)) – ((Σx) * (Σxy))) / n * (Σx 2) – (Σx) 2 We have all the values in the above table with n = 4. You need to calculate the linear regression line of the data set.įirst, calculate the square of x and product of x and y
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You can download this Regression Excel Template here – Regression Excel Template Regression Formula – Example #1