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Warm Up – Test Review

Warm Up – Test Review. Marginal and Conditional.

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Warm Up – Test Review

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  1. Warm Up – Test Review Marginal and Conditional

  2. Researchers looking at the relationship between the type of college attended (public or private) and achievement gather the following data on 3265 people who graduated from college in the same year. The variable “management level” describes their job description 20 years after graduating from college. • a. Calculate the marginal distribution of management level in percents. • b. Find the conditional distribution of management level for each college type, in percents. • c. Sketch the data from part (b) in a segmented bar graph and in a side-by-side bar graph.

  3. 182 1756 1327 1769 1496 3265 • Calculate the marginal distribution of management level in percents.

  4. 182 1756 1327 1769 1496 3265 • Find the conditional distribution of management level for each • college type, in percents.

  5. c. Sketch the data from part (b) in a segmented bar graph and in a side-by-side bar graph.

  6. c. Sketch the data from part (b) in a segmented bar graph and in a side-by-side bar graph. 60 100 50 High High 40 80 Med 60 30 % Med 40 20 Public Private Private Public 10 20 Low Low Private Public Public Private Low Medium High

  7. Below is a graph showing the total number of Oscar nominations for the four films that had PG or PG-13 ratings. What’s wrong with the way the information is presented in this graph? Using similar figures to compare heights exaggerates the differences between frequencies since people (wrongly) tend to compare areas.

  8. Graph the following: Class Freq. 20-40 35 40-60 27 60-100 20 100-200 10 200 – 800 28

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