Unformatted text preview: placebo =2. Assessment improvement is the difference between the first assessment score and the second assessment score. i) Compute descriptive statistics for assessment improvement for the group that took the drug and the group that took the placebo ii) Construct graphs (stem and leaf, probability plots, boxplots, histograms) for the assessment improvement for these two groups. iii) Using the descriptive statistics and the graphs above, describe ( in details) the shape of the distribution for the assessment improvement for these two groups. ( indicate the ID of patient with unusually high or low improvement, if any)...
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 Fall '11
 WanJohi
 Statistics, Biostatistics

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