t testn.

/ˈtiː tɛst/

Etymology: < t chosen arbitrarily as a symbol.

Statistics.

= Student's t-test n. at Student n.² 2

ΘΚΠ

the world > relative properties > number > probability or statistics > [noun] > significance > test for

significance test1902

Student's t-distribution1925

t test1932

Student's t-test1933

1924 R. 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.]

1932 R. A. Fisher Statistical Methods (ed. 4) v. 116 The validity of the t-test, as a test of this hypothesis, is therefore absolute.

1958 J. M. Argyle Relig. Behaviour iii. 16 The ‘t’ test..is generally used when equal measurement units are involved, otherwise various non-parametric methods are available.

1968 Brit. Med. Bull. 24 220/2 A selection of commonly required significance tests is available, including paired and unpaired t tests, correlation coefficients..and analysis of variance.

1974 Florida FL Reporter 13 73/1 Correlated one-tailed t-tests were run for both the differences between the two groups.

This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2018).

单词	t test
释义	t testn. /ˈtiː tɛst/ Etymology: < t chosen arbitrarily as a symbol. Statistics. = Student's t-test n. at Student n.² 2 ΘΚΠ the world > relative properties > number > probability or statistics > [noun] > significance > test for significance test1902 Student's t-distribution1925 t test1932 Student's t-test1933 1924 R. 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.] 1932 R. A. Fisher Statistical Methods (ed. 4) v. 116 The validity of the t-test, as a test of this hypothesis, is therefore absolute. 1958 J. M. Argyle Relig. Behaviour iii. 16 The ‘t’ test..is generally used when equal measurement units are involved, otherwise various non-parametric methods are available. 1968 Brit. Med. Bull. 24 220/2 A selection of commonly required significance tests is available, including paired and unpaired t tests, correlation coefficients..and analysis of variance. 1974 Florida FL Reporter 13 73/1 Correlated one-tailed t-tests were run for both the differences between the two groups. This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2018). < n.1932
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