STATS 110 Study Guide - Midterm Guide: Probability Plot, Simple Linear Regression, Standard Deviation
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Note that pages have been condensed on this key to fit on 3 pages, to save paper if you print it. The r output below shows a regression analysis of data from 84 medium-sized counties in the. For each county, x = percentage of adults in the county having at least a high-school diploma, and. Y = crime rate (crimes reported per 100,000 residents) in a given year. >lm(formula = crime ~ diploma, data = midterm) Error t value pr(>|t|) (intercept) 20517. 60 3277. 64 6. 260 1. 67e-08 *** Residual standard error: 2356 on 82 degrees of freedom. F-statistic: 16. 83 on 1 and 82 df, p-value: 9. 571e-05. Df sum sq mean sq f value pr(>f) Write the population version of the regression model. Yi = 0 + 1xi + i or y = 0 + 1xi. 20517. 6 170. 58 xi or yi = 20517. 6 170. 58 xi + ei. Interpret the slope in the context of this situation.
