Write a brief but complete essay, in which you summarize the main points.
Please include jormulas and graphs as appropriate.
We have studied three ways to measure variation: the range, standard deviation, box-and whisker plot. They all indicate the variation within data collection.
Discuss similarities and differences among these ways to measure data variation.
• Why would it seem reasonable to pair the median with a box-and-whisker plot & to pair the mean with the standard deviation?
What are the advantages and disadvantages of each method of describing data spread?
Comment on statements such as following:
a) The range is easy to compute, but it doesn’t give much information;
b)
Although the standard deviation is more complicated to compute, it has some significant applications;
c) The box-and-whisker plot is fairly easy to construct and it gives a lot of information at a glance.