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The interquartile range is another measure of spread, except that it has the added advantage of not being affected by large outlying values. In order to calculate this value we must first ...
The box plot shows the marks in a science test for a group of students. What is the range of the data? What is the lower quartile? Calculate the interquartile range of the data. The top 25% of the ...
Visualization methods enhance our understanding of sample data and help us make comparisons across samples. Box plots are a simple but powerful graphing tool that can be used in place of ...