caa a22 4500 38632672X CHVBK 20180307111655.0 cr unu---uuuuu 161130e198901 xx s 000 0 eng 10.1017/S0014479700016392 doi S0014479700016392 pii (NATIONALLICENCE)cambridge-10.1017/S0014479700016392 Finney D. J. International Statistical Institute Research Centre, 428 Prinses Beatrixlaan, 2270 AZ Voorburg, The Netherlands Was This in Your Statistics Textbook? IV. Frequency Data [Elektronische Daten] [D. J. Finney] Observations that are frequencies rather than measurements often call for special types of statistical analysis. This paper comments on circumstances in which methods for one type of data can sensibly be used for the other. A section on two-way contingency tables emphasizes the proper role of χ2 a test statistic but not a measure of association; it mentions the distinction between one-tail and two-tail significance tests and reminds the reader of dangers. Multiway tables bring new complications, and the problems of interactions when additional classificatory factors are explicit or hidden are discussed at some length. A brief outline attempts to show how probit, logit, and similar techniques are related to the analysis of contingency tables. Finally, three unusual examples are described as illustrations of the care that is needed to avoid jumping to conclusions on how frequency data should be analysed. Copyright © Cambridge University Press 1989 Experimental Agriculture Cambridge University Press 25/1(1989-01), 11-25 0014-4797 25:1<11 1989 25 EAG https://doi.org/10.1017/S0014479700016392 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0014479700016392 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Finney D. J. International Statistical Institute Research Centre, 428 Prinses Beatrixlaan, 2270 AZ Voorburg, The Netherlands NATIONALLICENCE 773 0- Experimental Agriculture Cambridge University Press 25/1(1989-01), 11-25 0014-4797 25:1<11 1989 25 EAG CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence SWISSBIB 386163332 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge