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Abstract
Jonckheere (1954) proposed a test for ordered alternatives in a design with k treatments and b levels of another factor (blocks). In this paper tables are given for the null distribution of Jonckheere's statistic. Exact probabilities and critical values are given for α-levels near .2, .l, .05, .01 and .001, where k = 2(1)6 and b = 2(1)5. Tables appear for designs in which there are an equal number of observations in treatments within a block, with cell sample sizes ranging from one to five.
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