Concept explainers
To find: the following is the best interpretation for the slope of the least-square regression line.
Answer to Problem AP2.10CPT
For each 1% increase in the graduation rate, the percent of families living in poverty is predicted to decrease by approximately 0.620
Explanation of Solution
Getting the slope of the regression line, it is observed the slope is negative defining an inverse relationship between poverty and high school graduation rate. It is observed that a, b, and d are not using the value of the slope.
Hence, the correct option is (c)
Chapter 7 Solutions
PRACTICE OF STATISTICS F/AP EXAM
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