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
随便看	iltf iluppai ilvaite im im'd im'ing im- image image acquisition image advertising image analysis image apprehension image association image brilliance image capture image cluster image consultancy image consultant image consulting image converter image dissector image editing image editor image enhancement image field