The associated Rs were: linear 0.966, quadratic 0.971, cubic 0.971, and quartic 0.977. The data were subjected to a trend analysis utilizing multiple regression techniques.It also performs statistical functions like histograms/broken line, box plots, modified box plots, distribution curve, scatter plot/XY line, med-med line, and linear/quadratic/cubic and quartic regression.The discriminant ∆ = (b 2 – 4ac) determines the nature of the roots of the quadratic equation. Where a, b, c are real numbers out of which ‘a’ is non-zero. In the single variable case, the general form of a quadratic equation is ax 2 + bx + c = 0.This segmented model showed there was a decelerating increase in quit ratios as part of a quadratic trend between 1973. The best fitting standard regression model was the cubic trend model (figure 3 and online supplementary table 4) and best fitting model overall was a segmented quadratic trend model with two breakpoints (figure 3 and table 1). In addition, it generates a scatter plot that depicts the curve of best fit This Quadratic Regression Calculator quickly and simply calculates the equation of the quadratic regression function and the associated correlation coefficient.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |