plugin-Chapter 10 Students

plugin-Chapter 10 Students - Graphs, Good and Bad CHAPTER...

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CHAPTER 10 Graphs, Good and Bad
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DISPLAYING DATA The first part of this course dealt with the production of data, through random sampling and randomized comparative experiments. This particular unit focuses on good ways to summarize and organize data.
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DISTRIBUTION Tells what values a variable takes and how often it takes these values. Can be a table, graph, or function.
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VARIABLES Some variables place individuals into categories (like eye color, gender), while some variables have a meaningful numerical scale (like height, age, exam score). Categorical Places an individual into one of several groups or categories Display distribution with a bar graph or a pie chart Quantitative (Numerical) Takes numerical values for which arithmetic operations such as adding and averaging make sense
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DATA TABLE Class Make-up on First Day (Summer 2002) Year Count Percent Freshman 18 41.9% Sophomore 10 23.3% Junior 6 14.0% Senior 9 20.9% Total 43 100.1%
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PIE CHART Class Make-up on First Day (Summer 2002) Freshman 41.9% Sophomore 23.3% Junior 14.0% Senior 20.9%
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plugin-Chapter 10 Students - Graphs, Good and Bad CHAPTER...

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