Applied Research for Equidistant Positioning of D Value in Progressive Scoring Equation

Let the D value in a reasonable position can make the application of progressive scoring equation more rationally. In this research, D is set on the basis of 0.5s spacing, and then the new progressive scoring equation is Y=0.909D2+48.86, this result shows that new progressive scoring equation can control less than 6.7% students who may fail the examination, the score range of 60 ~ 100 is eight points wider than traditional progressive scoring equation. Only in this way can we let more students got high score, and control less than 6.7% students who may fail the exam, this method can not only conform to scoring rules for ordinary students, but also make the score more logically and enhance the students´ enthusiasm of learning.