Discuss the need to interpret and analyze data. One method used is called "box plot and whiskers".
The steps to set up a "box plot" are shown, with examples used at each step.Sort the data from high to low; determine the median; draw a number line which will incorporate all the data; indicate the median with a dot above the line, indicate the lower quartile and higher quartile with dots. Draw a box using the quartile dots as ends and a line to represent the median. This type of analysis will show how much data is grouped around the median. Are the lower data readings clustered more closely, and what is the range of data? This system is best used to compare data from two different sets of information, like test scores among different classes. Assignment is to prepare a box plot for a given average of scores over a 10 yr. period for a basketball player.