FIGURE 14.1. Output from JASP for the 2 test for goodness of fit described in the pineapple on pizza example. The output provides the 2 statistic (1.089), degrees of freedom (1) and the exact p value (.297, which is greater than .05). The output also provides the observed values and expected values (note that both expected values are 22.5, but decimals are not shown). Based on our sample of 45 people, there is no significant difference between the observed and expected values for preferring pineapple on pizza, 2 (1, N = 45) = 1.089, p = .297. (“JASP chi-square goodness of fit” by Rupa G. Gordon/Judy Schmitt is licensed under CC BY-NC-SA 4.0.)
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