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Chapter 11 (1)

# Chapter 11 (1) - Displaying Distributions With Graphs...

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Displaying Distributions With Graphs

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Outline Histograms Interpreting Histograms Center and Spread Stemplots
Motivation Tonya pays \$6434/semester for in-state tuition at Chicago State. Is this a lot? There are 121 universities in Illinois. Cheapest is \$1536/semester at Shawnee Community College U of Michigan is \$19,329/semester Need to see how in state tuition is distributed in Illinois

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Histogram of Tuition for Michigan Universities Tonya
Stem & Leaf Plot Of In State College Tuition For Illinois Tonya

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Histograms
Recall The distribution of a variable is the possible values it can take on and how often it takes on those values. Ex. Suppose we have the heights of 15 individuals 67, 62, 68, 70, 71, 59, 62, 63, 68, 70, 72, 73, 66, 68, 71 Can you describe the distribution of theses heights? Any quantitative variable can be converted into a categorical variable How might these heights be converted into a categorical variable so that it’s distribution is easier to describe?

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