[[Randomization]]
Differences
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| en:create:randomization [10.08.2018 13:35] – admin | en:create:randomization [19.12.2018 11:05] – [Urns for Subgroup I] freekgille | ||
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| It may be the case that you need to ensure equal distribution of experimental groups in two subgroups -- for instance, if you have 3 stimuli and both the women in the study, as well as the men, should be equally divided between all three conditions. | It may be the case that you need to ensure equal distribution of experimental groups in two subgroups -- for instance, if you have 3 stimuli and both the women in the study, as well as the men, should be equally divided between all three conditions. | ||
| - | To do so, you require an internal variable and two urns (with the same content). The following example assumes that the sex was queried on an earlier page in the multiple-choice question SD02. Also, that you have set up two urns with the IDS " | + | To do so, you require an internal variable and two urns (with the same content). The following example assumes that the sex was queried on an earlier page in the multiple-choice question SD02. Also, that you have set up two urns with the IDS " |
| <code php> | <code php> | ||
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