Quiz4_questions

# Quiz4_questions - QUESTIONS FOR QUIZ 4 GEOG 360 SPRING 2008...

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QUESTIONS FOR QUIZ 4: GEOG 360 SPRING 2008 From the Text: 1. The summary statistics for nominal data are: o Data that results from counting simplest data level 2. The summary statistics for ordinal data are: o Data that provides a ranking o less than, more than decisions 3. The summary statistics for interval and ratio data are: o Data resulting from measurement o Most sophisticated data 4. What are the two main reasons that scientists use classification? o To reduce large number of individuals (objects or events) to a smaller number of groups in order to facilitate description and illustration o To define phenomena—classes about which general statements can be made 5. What is the purpose of mapping residuals? o Seeing how well the regression line summarizes the actual values of the dependent variable (Y). o For each actual value of the independent variable (X), there are two corresponding values of y: y observed and y estimated from the original regression line o The difference between these two is called the residual (Zi) value o Differences between observed y (or x) values and those estimated by the regression line o Regression- to measure the degree of association between two magnitude variables 6. What does the ‘standard error of the estimate’ tell you? o

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## This test prep was uploaded on 04/07/2008 for the course GEOG 360 taught by Professor Willis during the Spring '08 term at Binghamton.

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Quiz4_questions - QUESTIONS FOR QUIZ 4 GEOG 360 SPRING 2008...

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