A the average value of the standard score of each original score in a set of data is 0, and the standard deviation is 1.

B The absolute value of standard score indicates the relative distance between the original score and the average, and the symbol indicates that the original score is higher or lower than the average.

C the distribution of standard score is the same as the original score.

D. If the distribution of the original score is normal or close to normal, the value range of standard score is -4~4.

System content

The establishment of standard subsystem should generally include the following links:

(1) the provinces still organize scores according to the previous method, and then synthesize the original scores of each subject and count the number of candidates in each subject and score.

② The examination center of the State Education Commission, with the cooperation of some provincial examination institutions, carries out the score equivalence between the current year and previous years.

The examination center of the State Education Commission determines the conversion relationship between the original score and standard score, and the provincial examination institutions get the provincial norm scale score according to the conversion relationship. (provinces can make some fine-tuning according to the specific situation of score distribution when converting) ③ Provincial examination institutions announce the scores of provincial norm scale.

Reference to the above content: Baidu Encyclopedia-Standard Score