![]() Additional file 5: Draw a ROC curve using MedCal. ![]() Data are most readily entered to the program as Microsoft Excel spreadsheets. Methods: Microsoft Excel Visual Basic for Applications was used to design a computer module. Now that I have the equation, I can calculate the area under the curve by finding the value of f(10)-f(1) data analysis and statistical application available for Microsoft Excel. For example, x 2 will become x 3/3 and x will become x 2/2 and any constant (such as 1.85) will become 1.85x Addinsoft is among the fastest growing software companies in the analytical field. While I am not an expert in calculus, based on my limited understanding, you can convert an equation to a definite integral by increasing the power of x by 1, and diving it by that same value power. ![]() You need to get the definite integral for the polynomial equation. Now that we have the polynomial equation, we can use this to calculate the area for this line chart.īut before doing that, there is one more step that you need to do. ![]()
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