High School Enrollment The table lists the number of students (in millions) attending U.S. public school (grades 9-12) x years after 2000.
x (year) | 0 | 3 | 5 | 7 |
y (students) | 13.5 | 14.3 | 14.8 | 15.1 |
Source: National Center for Education Statistics.
(a) Use least-squares regression to find f(x) = ax + b so that f models the data.
(b) Graph f and the data. Interpret the slope.
(c) Estimate enrollment in 2002 and compare the estimate to the actual value of 14.1 million.
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