Hainan College Entrance Examination Original Score Conversion Formula Candidates in Hainan Province can find their college entrance examination scores on June 22nd, but this score is not the original exam scores of candidates, but the converted standard score. On June 2 1 day, the reporter interviewed Fu, deputy director of the provincial examination bureau, on the standardized conversion of college entrance examination results. According to Fu, admission is made according to candidates' positions in the group, and standard score is candidates' position scores in the province. The conversion principle of standard score is that for each single subject, the candidates in the province are sorted from the first to the last according to the original scores, and each candidate has a corresponding position because of different test scores, and the score corresponding to this position is the standard score. Then rank the standard scores of candidates from the first to the last, and get the standard scores of candidates according to their positions. The original score is the rolling score; According to the grading standard, the score directly evaluated by the answer is called the original score. The original score reflects the number of questions correctly answered by candidates, or the degree of correct answers. But the original score can't directly reflect the differences between candidates, can't describe the position of candidates after comparison, and can't explain what scores candidates should get in other equivalence tests. The calculation method of standard score is to calculate your scores in all subjects by statistical method, and she can see the size of a person's ability. The calculation is: there are n students taking the exam, and the original scores are a 1, a2, a3, and the number of candidates is sufficient; (2) The examination questions truly reflect the level of candidates, so the standard score can be divided into schemes. The standard score can not only reflect the level of candidates, but also directly reflect the position of test scores among all candidates. It is impossible to know the position of the original music score. The calculation process of standard score is as follows: 1, average score X 2, standard deviation S 3, standard score bi=(ai-X)/S* 100+500 4. The calculated results should be adjusted according to the ranking of scores among all candidates, which is the so-called percentile. You can quickly calculate the average score x, standard deviation s and standard score with EXCEL. For example, Z=(X-X')/S where x is the original score, x' is the average of the original score, and s is the standard deviation of the original score. Z-score takes the average value of a batch of scores as the reference point and expresses the distance in standard deviation. It consists of a symbol and an absolute value. The symbol indicates whether the original score is greater than or less than the average score, and the absolute value indicates the distance between the original score and the average score. After a batch of scores are all converted into Z scores, the whole distribution pattern has not changed. Z-score accurately describes the relative position of a score in a batch of scores. T=500+ 100Z formula, where 500 is the average score and 100 is the standard deviation.