how to do regression analysis in excel mac

The CORREL and PEARSON worksheet functions both calculate the correlation coefficient between two measurement variables when measurements on each variable are observed for each of N subjects. For each of the six possible pairs of pair in the preceding example). For example, in an experiment to measure the height of plants, the plants may be given different brands of fertilizer (for example, A, B, C) and might also be kept at different temperatures (for example, low, high). This analysis tool is useful when data can be classified along two different dimensions. TEST, and the Single Factor Anova model can be called upon instead.

With more than two samples, there is no convenient generalization of T. If there are only two samples, you can use the worksheet function T. The analysis provides a test of the hypothesis that each sample is drawn from the same underlying probability distribution against the alternative hypothesis that underlying probability distributions are not the same for all samples.

This tool performs a simple analysis of variance on data for two or more samples. The tool that you should use depends on the number of factors and the number of samples that you have from the populations that you want to test. The desired output is two arrays containing the y-values of the linear/quadratic regression.The Anova analysis tools provide different types of variance analysis. I have not gotten any output besides error messages yet. 'Determine if the region is linear or quadtratic' K = RMSE1 / RMSE2 'Greater than 1, non linear close to 1, linear' Quad = (quadSlope * nP2(i) ^ 2) + (quadB * nP2(i)) + quadC QuadEstOut = Application.LinEst(nAvg, Application.Power(nP2, Array(1, 2)), True, False) LinEstOut(i) = Application.LinEst(nAvg, nP2, 1, 0) 'linest returns a slope' Dim lin() As Variant 'linear regression'ĭim quad() As Variant 'polynomial regression'ĭim RMSE1 As Single 'RMSE of linear regression'ĭim RMSE2 As Single 'RMSE of quadratc regression'ĭim nAvg() As Variant 'Avg values being looked at in current loop'ĭim nP2() As Variant 'P2 values being looked at in current loop'

I have yet to find success doing this.Īvg & P2 are the variables for the input data. I know that linest is supposed to return the coefficients of a linear/quadratic regression, so I tried just creating a y=mx+b in my code to generate the arrays I want. Simple enough right? The problem is when I use the linest function, I'm not getting the results I was hoping for (a 2d array containing the x values in the first column and the y values in the second column), and instead I'm receiving 'Error 2015'. I'm trying to generate a linear and quadratic regression of some data I have using vba.

How to do regression analysis in excel mac