单词 | probit |
释义 | probitn. Statistics. The unit which forms the scale into which percentages may be transformed so that data evenly distributed between 0 and 100 per cent become normally distributed with a standard deviation of one such unit. ΘΚΠ the world > relative properties > number > probability or statistics > [noun] > probability > unit of probit1934 logit1944 1934 C. I. Bliss in Science 12 Jan. 38/1 These arbitrary probability units have been called ‘probits’. 1947 D. J. Finney Probit Anal. iii. 20 The probit of the proportion P is defined as the abscissa which corresponds to a probability P in a normal distribution with mean 5 and variance 1. 1991 R. Blundell et al. Taxation in Empirical Labour Supply Models (IFS Working Paper W91/9) 9 Note the regional childcare variables, drawn from Regional Trends, in the participation probit. Compounds C1. probit unit n. ΚΠ 1934 C. I. Bliss in Science 4 May 409/2 It seems desirable..to redefine the probit unit as equal to 5 plus (algebraically) the deviate of the normal curve. 1958 Immunology 1 225 On transforming the per cent haemolysis into probit units and plotting these results against the reciprocal of the corresponding serum dilution, a linear relationship was obtained. 1997 Philos. Trans. (Royal Soc.) B. 352 1188/1 It is also feasible to combine a generalization of the probit unit that uses its y value to pick deterministically one of m possibilities with a generalization of the linear unit that has m different linear regimes. probit line n. ΚΠ 1941 Biometrika 32 52 It will be necessary to group the data, and this will also be efficacious in obtaining a provisional probit line. 1968 Brit. Med. Bull. 24 248/1 An analysis of variance is given, from which it can be seen, for instance, whether a fit by a set of parallel probit lines is justified. 2000 Jrnl. Risk & Insurance 67 380 The greater concentration of distressed insurers at higher real-estate levels probably forces the logit and probit lines to slope upward. C2. probit analysis n. the technique of using probits in statistical analysis. ΘΚΠ the world > relative properties > number > probability or statistics > [noun] > probability > unit of > analysis using probits probit analysis1944 1944 Psychometrika 9 31 This method of probit analysis gives the maximum likelihood estimates of the unknown parameters. 1975 Jrnl. Royal Statist. Soc. C. 24 259 Probit analysis of dose-response curves and surfaces. 1993 Oxf. Econ. Papers 45 73 We then use the p variable as dependent variable in a probit analysis with independent variables t, σ, k, and Pt (where Pt is the relevant actual price). This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022). < n.1934 |
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