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按GB 3358-82《统计学名词及符号》的有关规定书写,常用如下:(1)样本的算术平均数用英文小写x-(中位数仍用M);(2)标准差用英文小写s;(3)标准误用英文小写Sx-;(4)t检验用英文小写t;(5)F检验用英文大写F;(6)卡方检验用希文小写2;(7)相关系数用英文小写r;(8)自由度用希文小写υ;(9
According to GB 3358-82 “statistical terms and symbols” of the relevant provisions of writing, commonly used are as follows: (1) the arithmetic mean of the sample in English lowercase x-(median still use M); (2) standard deviation in English lowercase s; (3) standard misuse of English lowercase Sx-; (4) t-test with English lowercase t; (5) F-test with English capital F; (6) chi-square test with Greek lowercase 2; (7) correlation coefficient Lowercase in English; (8) Degree of freedom in lowercase in Greek; (9)