Two different drug therapies were tested on a group of patients. All the patients suffered with the same anxiety disorder. Half the patients were given Therapy A and the other half were given Therapy B. Improvement was assessed on a scale from 0-25, wher
The two averages are very similar, suggesting that both therapies are as good as each other. However, the range of each group is very different. This suggests that, for some people, Therapy A was very beneficial, but for others, it had very little benefit
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