| 释义 |
t test Statistics.|ˈtiː tɛst|
[f. t chosen arbitrarily as a symbol.]
= Student's (t) test s.v. Student2.
[1924R. A. Fisher in Proc. Internat. Math. Congr. (1928) II. 498 If for the accurate standard deviation we substitute an estimate based on n degrees of freedom we have t = x √n/√ S(x2). 1925‘Student’ in Metron V. 105 The present tables have..at Mr. Fisher's suggestion been constructed with argument t = z√n.] 1932R. A. Fisher Statistical Methods for Research Workers (ed. 4) v. 116 The validity of the t-test, as a test of this hypothesis, is therefore absolute. 1958M. Argyle Relig. Behaviour iii. 16 The ‘t’ test..is generally used when equal measurement units are involved, otherwise various non-parametric methods are available. 1968Brit. Med. Bull. XXIV. 220/2 A selection of commonly required significance tests is available, including paired and unpaired t tests, correlation coefficients..and analysis of variance. 1974Florida FL Reporter XIII. 73/1 Correlated one-tailed t-tests were run for both the differences between the two groups. |