Blood samples following instillation of 2 drops of polymyxin B 10,000 units/ml and trimethoprim 1 mg/ml in the eye resulted in peak plasma concentrations of polymyxin B and trimethoprim of 1 unit/ml and 0.03 mcg/ml, respectively.
An Alternative Definition for IQR. In some texts, the interquartile range is defined differently. It is defined as the difference between the largest and smallest values in the middle 50% of a set of data.To compute an interquartile range using this definition, first remove observations from the lower quartile.Then, remove observations from the upper quartile. Then, from the remaining observations, compute the difference between the largest and smallest values.n Alternative Definition for IQR. In some texts, the interquartile range is defined differently. It is defined as the difference between the largest and smallest values in the middle 50% of a set of data.
Interquartile range. The interquartile range is another range used as a measure of the spread. The difference between upper and lower quartiles (Q3âQ1), which is called the interquartile range, also indicates the dispersion of a data set. The interquartile range spans 50% of a data set, and eliminates the influence of outliers because, in effect, the highest and lowest quarters are removed. Interquartile range = difference between upper quartile (Q 3) and lower quartile (Q 1)