Mikhalevich’s findings by far exceeded the boundaries of the problems of acceptanceinspection.6. Statistical practice often has to decide whether observations considerably divergingfrom the others or from the mean are suitable. Numerous pertinent rules established in theliterature are often groundless <strong>and</strong> are only being applied out of tradition. Authors, who treatstatistical data, not infrequently reject outlying observations without applying any rules <strong>and</strong>are therefore usually led to wrong conclusions.Assuming that the initial distribution was normal, Smirnov [20] derived the distribution ofthe deviation of the maximal term of the variational series from the mean normed by theempirical variance. He illustrated his results by a short table of the distribution obtained.Later Grubbs (1950) explicated this result as well; obviously, it remained unnoticed.Bendersky [1], who followed Smirnov, determined the distribution of the absolute value ofthe same deviation, again normed by the empirical variance. Bendersky & Shor [2] publisheda monograph devoted to estimating the anormality of observations complete with examplesworked out in detail, vast tables <strong>and</strong> criticism of wrong rules. Incidentally, wrongrecommendations had even slipped into the texts of widely used manuals written by eminentauthors. Thus, Romanovsky [106, pp. 25 – 29] advanced a rule based on a misunderst<strong>and</strong>ing:he assumed that the maximal term of a variational series <strong>and</strong> the mean of the otherobservations were independent.In this section, we shall also touch on some isolated directions of research; in the nearestfuture a few of them will undoubtedly attract considerably more attention. We would like toindicate first of all that the contributions on statistics of dependent trials were uncoordinated.Smirnov [21] recommended a statistic similar to the 2 <strong>and</strong> derived its limiting distributionfor testing the hypothesis on the constancy of transition probabilities p ij (p ij > 0) in a finiteMarkov chain with (s + 1) states.Linnik [51] offered a method of constructing confidence intervals for the correlationcoefficient in a normal stationary Markov chain under various hypotheses concerning theparameters of a one-dimensional normal distribution.Kolmogorov [114], Boiarsky [10] <strong>and</strong> others studied the analysis of variance. Bernstein’sinvestigations of the correlation theory, that he explicated in a number of papers, led him tointroducing motions of firm, isogeneous <strong>and</strong> elastic correlations [35]which proved veryuseful. In a series of papers Sarmanov [7 – 13] developed these ideas. Working on anotheraspect of correlation theory, Mitropolsky [16; 18] fulfilled a number of studies mostlydevoted to correlation equations.<strong>7.</strong> Statistical practice widely uses tables of the main distributions. In some cases, however,tabulation encounters not only practical difficulties, it often leads to more fundamentalcomplications. In the first place we ought to indicate here the tabulation of functionsdepending on several parameters. Of unquestionable interest is therefore the widespread useof successfully compiled nomograms. Some not numerous attempts of such kind were madein the beginning of the 1930s when A.I. Nekrasov compiled a nomogram for the Studentdistribution function. Three nomograms pertaining to correlation theory were included in vol.1 of the Pearson tables. Elementary nomograms for the normal distribution served asillustrations in the well-known books of Glagolev [24] <strong>and</strong> Frank [12]. However, onlyErmilov initiated a systematic study of nomographic representation of the formulas ofmathematical statistics. In a lengthy paper he [1] provided nomograms of the density <strong>and</strong> thedistribution function of the Student law, the 2 <strong>and</strong> the Fisher distribution {the F-distribution?}. Later he published nomograms of the confidence intervals for estimating bothunknown probabilities by observations <strong>and</strong> the expectation of the normal law.
At least two more authors offered nomograms for the Student distribution constructed byother methods: M.V. Pentkovsky (doctoral dissertation) <strong>and</strong> James-Levi [6]. Mitropolskyincluded a number of nomograms in his thorough many-volume course [20, 22].During the 40 years (1917 – 1947) a large number of tables was calculated in the <strong>Soviet</strong>Union. They were mostly published as natural appendices to appropriate articles ormonographs. A comparatively small number of contributions were devoted to tables as such.From among these we indicate Slutsky’s fundamental work [34] where the author, byapplying a number of clever computational tricks, was able to compile faultless five-placetables of the incomplete function admitting a fair interpolation throughout.Smirnov [8] compiled a table for the Kolmogorov distribution; it was reprinted in the USA<strong>and</strong> included in a number of educational manuals. We also mention tables of the expectationof the correlation coefficient (Dikovskaia & Sultanova [4]) <strong>and</strong> numerous useful tablesconcerning the practical use of the various methods of statistical quality control.Notes1. {Notation not explained.}2. {Notation used here as well as in the next few lines insufficiently explained. Neitherwere the three contributions mentioned there, in these lines, helpful. I was only able toperceive that D, unlike D + , was concerned with absolute values of some differences.}12. Joint Bibliography to the Two Preceding ContributionsForeword by TranslatorIn addition to what I noted in my Foreword to the previous Joint Bibliography, I mentionseveral more points. First, in both essays references to joint papers were made in anextraordinary way. Thus, Kolmogorov cited Gelf<strong>and</strong> [75], himself [157] <strong>and</strong> Yaglom [25]bearing in mind a single contribution. In this particular case I wrote Gelf<strong>and</strong>, Kolmogorov &Yaglom [75] (arranging the authors alphabetically) <strong>and</strong> excluded Kolmogorov [157] <strong>and</strong>Yaglom [25] from this Joint Bibliography. Second, Kolmogorov cited some foreign authorswithout providing an exact reference. Also, in a few instances he referred to <strong>Soviet</strong> authors inthe text itself <strong>and</strong> I distinguished these cases by mentioning them in a different way, both inthe translation of his paper <strong>and</strong> here. Example: Rosanov (1958). Third <strong>and</strong> last, this time, Ionly provide the titles of books; in other cases, I indicate the pertinent periodical, volumenumber, etc.AbbreviationsAN = Akademia NaukC.r. = C.r. Acad. Sci. ParisDAN = Doklady AN (of the <strong>Soviet</strong> Union if not stated otherwise)IAN = Izvestia AN of the <strong>Soviet</strong> Union (ser. Math. if not stated otherwise,or no series at all)IMM = Inst. Math. & Mekh.L = LeningradLGU = Leningrad State Univ.M = MoscowMGU = Moscow State Univ.MIAN = Steklov Math. Inst.MS = Matematich. SbornikSAGU = Srendeaziatsk. (Central Asian) Gosudarstven. Univ. (Tashkent)SSR = <strong>Soviet</strong> Socialist RepublicTV = Teoria Veroiatnostei i Ee Primenenia
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[3] I bear in mind the well-known p
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successes of physical statistics. B
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classes of independent facts whose
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distribution is a corollary of the
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examine in the first place the curv
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12. According to Bortkiewicz’ ter
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generality, the similarities taking
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one on another, as well as the corr
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is inapplicable because the right s
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Instead, Slutsky introduced new not
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abandoned in August 1936, but it is
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last decades, mathematicians more o
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charged with making the leading ple
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motion and a number of others) are
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phenomena. It is self-evident that
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Such new demands were formulated in
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The addition of independent random
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automatic lathes, etc. Here, the ma
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11. Kolmogorov, A.N. Grundbegriffe
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period 1 and remained, until the ap
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of the analytical tool rather than
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with probability approaching unity,
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logic. The ensuing vagueness in his
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2. Gnedenko, B.V. (1949), On Lobach
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will be sufficient, although not ne
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nlimk = 1P(| k (n) - m k (n) | > H
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favorite classical issue as the gam
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and some quite definite (not depend
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influenced by a construction that a
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